The document provides step-by-step working of a chemistry problem calculating the volume of gas in a balloon after a temperature change. It starts with the information that a balloon contains 975 cm3 of air at 5°C and asks if it will burst when brought inside at 25°C, assuming constant pressure. The solution uses the ideal gas law to set up two equations relating the initial and final states, and solves them to find the final volume is 1045 cm3, so the balloon will burst as it exceeds the maximum volume of 1000 cm3.
types of polymerization (Polymerization reactionHaseeb Ahmad
This document discusses different types of polymerization reactions including chain growth polymerization, step growth polymerization, and ionic polymerization. Chain growth polymerization involves initiation, propagation, and termination steps. Step growth polymerization involves condensation reactions between monomers to form polymers and byproducts like water. Ionic polymerization includes anionic polymerization using nucleophilic initiators and cationic polymerization using Lewis acid catalysts. Ziegler-Natta catalysis uses transition metal catalysts to polymerize monomers like propylene.
This document discusses several gas laws including Boyle's Law, Charles' Law, Avogadro's Law, Gay-Lussac's Law, Dalton's Law, and properties of gases such as specific heat capacities. Boyle's Law states that the pressure and volume of a gas are inversely related at constant temperature. Charles' Law specifies that the volume of a gas varies directly with the absolute temperature at constant pressure. Avogadro's Law describes how the volume of a gas is directly related to the number of moles at constant temperature and pressure.
The document provides a reading list for essential and supplementary textbooks on topics related to physical chemistry and inorganic chemistry. The essential reading section lists 4 textbooks, while the supplementary reading section lists 3 additional textbooks. The document concludes by recommending specific textbooks to cover topics related to ionic bonding, types of chemical bonds, and molecular orbital theory.
1) The document discusses the Maxwell-Boltzmann distribution, which describes the distribution of velocities or energies of particles in a gas. Maxwell and Boltzmann developed this distribution based on assumptions about molecular motion in gases.
2) The Maxwell-Boltzmann distribution can be derived using statistical mechanics and considering the multiplicity, or number of arrangements, of particles into different energy states. Maximizing the multiplicity subject to conservation constraints leads to the Maxwell-Boltzmann distribution.
3) The derivation utilizes concepts such as the density of states function, integrals over energy states, and results in identifying temperature as proportional to the average kinetic energy per particle divided by the Boltzmann constant.
Properties of gases as learned in introductory physical chemistry (including general chemistry material). Topics include: kinetic molecular theory, ideal gas law, ideal gas equation, compressibility factor, van der Waals equation, gas pressure, kinetic energy of gases, collision frequency, mean-free-path, gas diffusion vs. effusion, Dalton's law, mole fractions, and partial pressures
This document discusses the electronic configuration of carbon and how it forms bonds. It explains that carbon normally forms four single bonds by undergoing sp3 hybridization, where one 2s orbital and three 2p orbitals combine to form four new hybrid orbitals oriented toward the corners of a tetrahedron. It also discusses sp2 and sp hybridization which allow carbon to form multiple and triple bonds. The document contrasts primary covalent, ionic, and coordinate covalent bonds from secondary bonds formed by hydrogen bonding and van der Waals forces.
This document is a report on ideal and real gases submitted by eight students from the Chemical Engineering Department at Koya University. It includes an abstract, introduction, body with sections on what gases are, the two types of gases (ideal and real), differences between them, applications, and deviations from ideal gas behavior. The body contains figures and explanations of concepts. It concludes that ideal gases have theoretical, non-real properties, while real gas equations can be derived from the ideal gas law to account for intermolecular forces and particle volumes at different pressures and temperatures.
types of polymerization (Polymerization reactionHaseeb Ahmad
This document discusses different types of polymerization reactions including chain growth polymerization, step growth polymerization, and ionic polymerization. Chain growth polymerization involves initiation, propagation, and termination steps. Step growth polymerization involves condensation reactions between monomers to form polymers and byproducts like water. Ionic polymerization includes anionic polymerization using nucleophilic initiators and cationic polymerization using Lewis acid catalysts. Ziegler-Natta catalysis uses transition metal catalysts to polymerize monomers like propylene.
This document discusses several gas laws including Boyle's Law, Charles' Law, Avogadro's Law, Gay-Lussac's Law, Dalton's Law, and properties of gases such as specific heat capacities. Boyle's Law states that the pressure and volume of a gas are inversely related at constant temperature. Charles' Law specifies that the volume of a gas varies directly with the absolute temperature at constant pressure. Avogadro's Law describes how the volume of a gas is directly related to the number of moles at constant temperature and pressure.
The document provides a reading list for essential and supplementary textbooks on topics related to physical chemistry and inorganic chemistry. The essential reading section lists 4 textbooks, while the supplementary reading section lists 3 additional textbooks. The document concludes by recommending specific textbooks to cover topics related to ionic bonding, types of chemical bonds, and molecular orbital theory.
1) The document discusses the Maxwell-Boltzmann distribution, which describes the distribution of velocities or energies of particles in a gas. Maxwell and Boltzmann developed this distribution based on assumptions about molecular motion in gases.
2) The Maxwell-Boltzmann distribution can be derived using statistical mechanics and considering the multiplicity, or number of arrangements, of particles into different energy states. Maximizing the multiplicity subject to conservation constraints leads to the Maxwell-Boltzmann distribution.
3) The derivation utilizes concepts such as the density of states function, integrals over energy states, and results in identifying temperature as proportional to the average kinetic energy per particle divided by the Boltzmann constant.
Properties of gases as learned in introductory physical chemistry (including general chemistry material). Topics include: kinetic molecular theory, ideal gas law, ideal gas equation, compressibility factor, van der Waals equation, gas pressure, kinetic energy of gases, collision frequency, mean-free-path, gas diffusion vs. effusion, Dalton's law, mole fractions, and partial pressures
This document discusses the electronic configuration of carbon and how it forms bonds. It explains that carbon normally forms four single bonds by undergoing sp3 hybridization, where one 2s orbital and three 2p orbitals combine to form four new hybrid orbitals oriented toward the corners of a tetrahedron. It also discusses sp2 and sp hybridization which allow carbon to form multiple and triple bonds. The document contrasts primary covalent, ionic, and coordinate covalent bonds from secondary bonds formed by hydrogen bonding and van der Waals forces.
This document is a report on ideal and real gases submitted by eight students from the Chemical Engineering Department at Koya University. It includes an abstract, introduction, body with sections on what gases are, the two types of gases (ideal and real), differences between them, applications, and deviations from ideal gas behavior. The body contains figures and explanations of concepts. It concludes that ideal gases have theoretical, non-real properties, while real gas equations can be derived from the ideal gas law to account for intermolecular forces and particle volumes at different pressures and temperatures.
This document provides an overview of equations of state and the compressibility factor. It discusses the ideal gas law and deviations from it, using the compressibility factor Z to quantify these deviations. Various equations of state are presented, including the van der Waals and virial equations. Cubic equations of state are discussed in depth, along with their history and widespread use in the petroleum industry. The challenges of modeling fluid properties in the critical region and at high pressures are also addressed.
This document provides an overview of polymer chemistry course content including synthesis of polymers, characterization of polymer molecules, molecular weight determination, and polymer structures. It discusses different types of polymers such as thermoplastics, thermosets, elastomers, and their properties. The key topics covered are polymerization reactions, molecular weight averages, polymer configurations including isotactic, syndiotactic and atactic, nomenclature, and the importance of molecular weight on polymer properties.
Chemical Thermodynamics-II , Semester 3, As per syllabus of the University of...AQEELAABDULQURESHI
Unit I:Physical Chemistry 1.1 Chemical Thermodynamics-II
1.Free Energy Functions: Helmholtz Free Energy, Gibb's Free Energy, Variation of Gibb's free energy with Pressure and Temperature.
2. Gibbs-Helmholtz equation
3. Thermodynamics of Open System: Partial Molal Properties, Chemical Potential and its variation with Pressure and Temperature, Gibb's Duhem equation.
4. Concept of Fugacity and Activity
5. van't Hoff reaction isotherm and van't Hoff reaction isochore.
The document introduces free energy functions such as Helmholtz energy and Gibbs free energy. It discusses how these functions can be used to express spontaneity criteria for systems under different constraints of temperature and volume or pressure. Specifically, it describes how Helmholtz energy applies for constant temperature and volume, while Gibbs free energy applies for constant temperature and pressure. The document also examines physical interpretations and relationships between the different free energy functions and how they vary with respect to temperature, volume, and pressure.
INTRODUCTION:
Hybrid Orbitals
Developed by Linus Pauling, the concept of hybrid orbitals was a theory created to explain the structures of molecules in space. The theory consists of combining atomic orbitals (ex: s,p,d,f) into new hybrid orbitals (ex: sp, sp2, sp3).
Classification of inorganic polymers by Dr. Salma Amirsalmaamir2
The document discusses the classification of inorganic polymers. There are four main ways to classify inorganic polymers: (1) based on whether the backbone contains one element (homo-atomic) or multiple elements (hetero-atomic), (2) based on the type of reaction that forms the polymer such as condensation, addition, or coordination, (3) based on the number and type of bridging bonds between units, and (4) based on the main element that makes up the polymer such as boron, silicon, phosphorus, or sulfur. Examples are provided for common inorganic polymers that fall under each classification method.
Deviation of real gas from ideal behaviourvidyakvr
Real gases deviate from ideal gas behavior at high pressures and low temperatures due to the assumptions of negligible molecular volume and no intermolecular forces being incorrect in those conditions. Van der Waals proposed an equation to account for these deviations that includes pressure and volume correction terms related to intermolecular attractive forces and molecular size. The compressibility factor Z, which is the ratio of PV to nRT, can quantify this deviation from ideal behavior for real gases as it equals 1 for ideal gases but varies from 1 for real gases.
Fuels in solid, liquid & gaseous state Arslan Abbas
This document discusses different types of fuels that exist in solid, liquid, and gaseous states. It describes various solid fuels like coal, coke, briquettes and solid pitch. Liquid fuels discussed include gasoline, kerosene, diesel and various fuel oils. Gaseous fuels mentioned are natural gas, LPG, blast furnace gas, coke oven gas, producer gas and coal gas. It also discusses factors to consider when selecting fuels and properties of different petroleum products and solid, liquid and gaseous fuels.
Fullerenes were discovered in 1985 at Rice University and consist of closed hollow cages of carbon atoms arranged in pentagonal and hexagonal rings. The most common fullerene is buckyball (C60), but others include C70, C72, etc. Fullerenes can be produced by vaporizing carbon in a gas medium and spontaneously forming in the condensing vapor. They are very stable due to their structure, with the highest tensile strength of any known material. Research shows fullerenes have applications as strong, resilient materials for armor and inhibiting HIV viruses due to antiviral properties when bonded to other elements.
This is an introduction to stars, including the basics of observing and classifying stars as well as their evolution and life cycle. This is a modification of a presentation I found online.
It contains full explanation about borazine, which includes physical and chemical nature of borazine and it's applications. Which also includes CSIR and GATE questions.
This document discusses fuels and combustion. It defines fuels and combustion, describes types of fuels like solid, liquid and gaseous. It explains complete and incomplete combustion, oxidation of carbon, hydrogen and sulfur in combustion reactions. It discusses air composition, theoretical air requirements, combustion of hydrocarbon fuels. It also covers properties of fuels like heating value, viscosity and methods of determining heating value through bomb calorimeter and gas calorimeter.
The document discusses alkanes and cycloalkanes. It describes how alkanes are found naturally in petroleum and natural gas. Petroleum is separated through distillation into fractions like gasoline and kerosene. Alkanes can be refined and processed through technologies like cracking, isomerization, and reforming to produce smaller alkanes, branched alkanes, and aromatics for use in fuels and petrochemicals. The physical properties of alkanes are also covered, including combustion, heats of combustion, and octane ratings. Naming conventions for alkanes like alkyl groups and IUPAC nomenclature are outlined.
This document provides an overview of supramolecular chemistry. It begins with a brief history and definitions of key terms like supramolecular chemistry and self-assembly. It then describes various types of non-covalent interactions that hold supramolecular structures together, such as hydrogen bonding, metal-ligand interactions, π-π stacking, and hydrophobic effects. Examples are given of self-assembled structures like grids, helicates, and polyhedral cages. The document concludes by noting the increasing sophistication of supramolecular systems incorporating components like fullerenes and nanoparticles for applications in nanotechnology.
This document discusses line defects called dislocations in crystal structures. It describes two main types of dislocations: edge dislocations, which involve an extra half-plane of atoms, and screw dislocations, where lattice planes spiral around the dislocation line. The direction and magnitude of the slip caused by a dislocation is represented by the Burgers vector. For edge dislocations, the Burgers vector is perpendicular to the dislocation line, while for screw dislocations it is parallel to the line. Dislocations influence many material properties.
This document provides an overview of quantum mechanics. It begins by explaining that quantum mechanics describes the motion of subatomic particles and is needed to understand the properties of atoms and molecules. It then discusses some key developments in quantum mechanics, including Planck's quantum theory of radiation, Einstein's explanation of the photoelectric effect, de Broglie's hypothesis of matter waves, Heisenberg's uncertainty principle, and Schrodinger's wave equation. The document also compares classical and quantum mechanics and provides examples of quantum mechanical applications like atomic orbitals and black body radiation.
The document appears to be describing the magnetic properties of inorganic complexes. It discusses how ligand field theory can be used to predict whether a complex will be paramagnetic or diamagnetic based on whether it forms a low-spin or high-spin configuration. Low-spin complexes tend to be diamagnetic due to having more paired electrons, while high-spin complexes are often paramagnetic since they have more unpaired electrons. The magnitude of the crystal field splitting parameter Δ depends on factors like the metal ion, its oxidation state, and the identity and geometry of the ligands.
Organoborane chemistry deals with organoboron compounds that contain carbon-boron bonds. Key reactions of organoboranes include hydroboration of alkenes, oxidation of organoboranes to alcohols, isomerization of organoboranes at high temperatures, protonolysis with carboxylic acids, and carbonylation with carbon monoxide. Carbonylation can produce aldehydes, ketones, or alcohols depending on reaction conditions and presence of migrating groups.
This document is a presentation by Group 4 of Diploma Civil "A" on the topic of fuel and combustion. It introduces different types of fuels such as solid, liquid, and gaseous fuels. Solid fuels discussed include coal, coke, and charcoal. Liquid fuels mentioned are tar, kerosene, diesel, petrol, and gas. Gaseous fuels include natural gas, coal gas, and biogas. The presentation covers the characteristics of good fuels, classification of fuels, advantages and disadvantages of different fuel types, and concepts of combustion and calorific values. In the end, the group thanks their professor Mr. Tarang Agarwal for giving them the opportunity to present.
Polyphosphazenes... preparation and properties by Dr. Salma Amirsalmaamir2
This document discusses inorganic polymers called polyphosphazenes. It describes their general molecular structure as having an alternating phosphorus and nitrogen backbone with two organic side groups attached to each phosphorus atom. Over 700 types of polyphosphazenes have been synthesized with a wide range of physical and chemical properties. They are synthesized via ring opening polymerization or condensation polymerization of monomers. Polyphosphazenes have properties including flexibility, solubility, elasticity, and degradation rates that depend on the specific organic side groups. They can be modified and crosslinked for different applications.
CALL is a relatively new interdisciplinary field that draws upon influences from other disciplines like computing, teaching, learning, psychology, and artificial intelligence. For CALL, considering the major influences from other areas is important for understanding its development, and CALL supporters need to be aware of developments in related disciplines working on complex problems. Psychology in particular is often referred to as providing a theoretical base for CALL work.
This document contains multiple revision exercises on forces and related concepts. It covers topics like friction, gravitational force, magnetic force, and turning effect. Each exercise contains sections with multiple choice questions to test understanding, short answer questions to explain key concepts, and longer answer questions applying the concepts. The exercises provide a comprehensive review of fundamental force concepts in physics.
This document provides an overview of equations of state and the compressibility factor. It discusses the ideal gas law and deviations from it, using the compressibility factor Z to quantify these deviations. Various equations of state are presented, including the van der Waals and virial equations. Cubic equations of state are discussed in depth, along with their history and widespread use in the petroleum industry. The challenges of modeling fluid properties in the critical region and at high pressures are also addressed.
This document provides an overview of polymer chemistry course content including synthesis of polymers, characterization of polymer molecules, molecular weight determination, and polymer structures. It discusses different types of polymers such as thermoplastics, thermosets, elastomers, and their properties. The key topics covered are polymerization reactions, molecular weight averages, polymer configurations including isotactic, syndiotactic and atactic, nomenclature, and the importance of molecular weight on polymer properties.
Chemical Thermodynamics-II , Semester 3, As per syllabus of the University of...AQEELAABDULQURESHI
Unit I:Physical Chemistry 1.1 Chemical Thermodynamics-II
1.Free Energy Functions: Helmholtz Free Energy, Gibb's Free Energy, Variation of Gibb's free energy with Pressure and Temperature.
2. Gibbs-Helmholtz equation
3. Thermodynamics of Open System: Partial Molal Properties, Chemical Potential and its variation with Pressure and Temperature, Gibb's Duhem equation.
4. Concept of Fugacity and Activity
5. van't Hoff reaction isotherm and van't Hoff reaction isochore.
The document introduces free energy functions such as Helmholtz energy and Gibbs free energy. It discusses how these functions can be used to express spontaneity criteria for systems under different constraints of temperature and volume or pressure. Specifically, it describes how Helmholtz energy applies for constant temperature and volume, while Gibbs free energy applies for constant temperature and pressure. The document also examines physical interpretations and relationships between the different free energy functions and how they vary with respect to temperature, volume, and pressure.
INTRODUCTION:
Hybrid Orbitals
Developed by Linus Pauling, the concept of hybrid orbitals was a theory created to explain the structures of molecules in space. The theory consists of combining atomic orbitals (ex: s,p,d,f) into new hybrid orbitals (ex: sp, sp2, sp3).
Classification of inorganic polymers by Dr. Salma Amirsalmaamir2
The document discusses the classification of inorganic polymers. There are four main ways to classify inorganic polymers: (1) based on whether the backbone contains one element (homo-atomic) or multiple elements (hetero-atomic), (2) based on the type of reaction that forms the polymer such as condensation, addition, or coordination, (3) based on the number and type of bridging bonds between units, and (4) based on the main element that makes up the polymer such as boron, silicon, phosphorus, or sulfur. Examples are provided for common inorganic polymers that fall under each classification method.
Deviation of real gas from ideal behaviourvidyakvr
Real gases deviate from ideal gas behavior at high pressures and low temperatures due to the assumptions of negligible molecular volume and no intermolecular forces being incorrect in those conditions. Van der Waals proposed an equation to account for these deviations that includes pressure and volume correction terms related to intermolecular attractive forces and molecular size. The compressibility factor Z, which is the ratio of PV to nRT, can quantify this deviation from ideal behavior for real gases as it equals 1 for ideal gases but varies from 1 for real gases.
Fuels in solid, liquid & gaseous state Arslan Abbas
This document discusses different types of fuels that exist in solid, liquid, and gaseous states. It describes various solid fuels like coal, coke, briquettes and solid pitch. Liquid fuels discussed include gasoline, kerosene, diesel and various fuel oils. Gaseous fuels mentioned are natural gas, LPG, blast furnace gas, coke oven gas, producer gas and coal gas. It also discusses factors to consider when selecting fuels and properties of different petroleum products and solid, liquid and gaseous fuels.
Fullerenes were discovered in 1985 at Rice University and consist of closed hollow cages of carbon atoms arranged in pentagonal and hexagonal rings. The most common fullerene is buckyball (C60), but others include C70, C72, etc. Fullerenes can be produced by vaporizing carbon in a gas medium and spontaneously forming in the condensing vapor. They are very stable due to their structure, with the highest tensile strength of any known material. Research shows fullerenes have applications as strong, resilient materials for armor and inhibiting HIV viruses due to antiviral properties when bonded to other elements.
This is an introduction to stars, including the basics of observing and classifying stars as well as their evolution and life cycle. This is a modification of a presentation I found online.
It contains full explanation about borazine, which includes physical and chemical nature of borazine and it's applications. Which also includes CSIR and GATE questions.
This document discusses fuels and combustion. It defines fuels and combustion, describes types of fuels like solid, liquid and gaseous. It explains complete and incomplete combustion, oxidation of carbon, hydrogen and sulfur in combustion reactions. It discusses air composition, theoretical air requirements, combustion of hydrocarbon fuels. It also covers properties of fuels like heating value, viscosity and methods of determining heating value through bomb calorimeter and gas calorimeter.
The document discusses alkanes and cycloalkanes. It describes how alkanes are found naturally in petroleum and natural gas. Petroleum is separated through distillation into fractions like gasoline and kerosene. Alkanes can be refined and processed through technologies like cracking, isomerization, and reforming to produce smaller alkanes, branched alkanes, and aromatics for use in fuels and petrochemicals. The physical properties of alkanes are also covered, including combustion, heats of combustion, and octane ratings. Naming conventions for alkanes like alkyl groups and IUPAC nomenclature are outlined.
This document provides an overview of supramolecular chemistry. It begins with a brief history and definitions of key terms like supramolecular chemistry and self-assembly. It then describes various types of non-covalent interactions that hold supramolecular structures together, such as hydrogen bonding, metal-ligand interactions, π-π stacking, and hydrophobic effects. Examples are given of self-assembled structures like grids, helicates, and polyhedral cages. The document concludes by noting the increasing sophistication of supramolecular systems incorporating components like fullerenes and nanoparticles for applications in nanotechnology.
This document discusses line defects called dislocations in crystal structures. It describes two main types of dislocations: edge dislocations, which involve an extra half-plane of atoms, and screw dislocations, where lattice planes spiral around the dislocation line. The direction and magnitude of the slip caused by a dislocation is represented by the Burgers vector. For edge dislocations, the Burgers vector is perpendicular to the dislocation line, while for screw dislocations it is parallel to the line. Dislocations influence many material properties.
This document provides an overview of quantum mechanics. It begins by explaining that quantum mechanics describes the motion of subatomic particles and is needed to understand the properties of atoms and molecules. It then discusses some key developments in quantum mechanics, including Planck's quantum theory of radiation, Einstein's explanation of the photoelectric effect, de Broglie's hypothesis of matter waves, Heisenberg's uncertainty principle, and Schrodinger's wave equation. The document also compares classical and quantum mechanics and provides examples of quantum mechanical applications like atomic orbitals and black body radiation.
The document appears to be describing the magnetic properties of inorganic complexes. It discusses how ligand field theory can be used to predict whether a complex will be paramagnetic or diamagnetic based on whether it forms a low-spin or high-spin configuration. Low-spin complexes tend to be diamagnetic due to having more paired electrons, while high-spin complexes are often paramagnetic since they have more unpaired electrons. The magnitude of the crystal field splitting parameter Δ depends on factors like the metal ion, its oxidation state, and the identity and geometry of the ligands.
Organoborane chemistry deals with organoboron compounds that contain carbon-boron bonds. Key reactions of organoboranes include hydroboration of alkenes, oxidation of organoboranes to alcohols, isomerization of organoboranes at high temperatures, protonolysis with carboxylic acids, and carbonylation with carbon monoxide. Carbonylation can produce aldehydes, ketones, or alcohols depending on reaction conditions and presence of migrating groups.
This document is a presentation by Group 4 of Diploma Civil "A" on the topic of fuel and combustion. It introduces different types of fuels such as solid, liquid, and gaseous fuels. Solid fuels discussed include coal, coke, and charcoal. Liquid fuels mentioned are tar, kerosene, diesel, petrol, and gas. Gaseous fuels include natural gas, coal gas, and biogas. The presentation covers the characteristics of good fuels, classification of fuels, advantages and disadvantages of different fuel types, and concepts of combustion and calorific values. In the end, the group thanks their professor Mr. Tarang Agarwal for giving them the opportunity to present.
Polyphosphazenes... preparation and properties by Dr. Salma Amirsalmaamir2
This document discusses inorganic polymers called polyphosphazenes. It describes their general molecular structure as having an alternating phosphorus and nitrogen backbone with two organic side groups attached to each phosphorus atom. Over 700 types of polyphosphazenes have been synthesized with a wide range of physical and chemical properties. They are synthesized via ring opening polymerization or condensation polymerization of monomers. Polyphosphazenes have properties including flexibility, solubility, elasticity, and degradation rates that depend on the specific organic side groups. They can be modified and crosslinked for different applications.
CALL is a relatively new interdisciplinary field that draws upon influences from other disciplines like computing, teaching, learning, psychology, and artificial intelligence. For CALL, considering the major influences from other areas is important for understanding its development, and CALL supporters need to be aware of developments in related disciplines working on complex problems. Psychology in particular is often referred to as providing a theoretical base for CALL work.
This document contains multiple revision exercises on forces and related concepts. It covers topics like friction, gravitational force, magnetic force, and turning effect. Each exercise contains sections with multiple choice questions to test understanding, short answer questions to explain key concepts, and longer answer questions applying the concepts. The exercises provide a comprehensive review of fundamental force concepts in physics.
Beginners: Microsoft Office Word 2007 Lesson 2adultref
This document provides an overview and exercises for lesson 2 of a Microsoft Word 2007 basics course. It covers entering and formatting text, including specifying fonts and sizes, bold, italic and underline formatting. It also covers correcting text using backspace and delete, Word's auto-correct feature, and creating automatic bullet and numbered lists. The lesson teaches students how to work with basic text formatting and editing tools in Word.
TIPS FOR ANSWERING ENGLISH UPSR PAPER 2 (SECTION B)Blue Bird
This document provides guidance for answering a multi-part question on an English exam. For part A, students are instructed to complete a table by looking up information in a stimulus. For part B, students must choose one option and give reasons for their choice in a paragraph. Scoring criteria are also described, with full marks being awarded based on accurate answers in part A and well-written reasoning using varied sentences in part B. Sample sentences are provided to help students structure their response.
chemistry calculations percent yield and atom economyrei64
Percentage yield is a number between 0-100 that indicates how successful a chemical reaction was at producing the desired product. It is calculated by taking the mass of product actually produced and dividing it by the theoretical mass expected based on the limiting reactant.
Atom economy is also a number between 0-100 that indicates how efficiently a reaction uses reactants to produce the desired product. It is calculated by taking the mass of the desired product and dividing it by the total mass of all products.
Factors like incomplete reactions, losses during workup, and impure products can decrease the percentage yield of a reaction.
This document provides guidance for answering Section B of a media exam on the topic of media and collective identity. It outlines the assessment criteria and structure expected for the essay response. Students should choose two historical and two contemporary media texts to analyze how youth are represented and how those representations may influence understanding of collective identity. While media generally aims to encourage conformity, identities are complex and audience responses vary, from accepting to rejecting media portrayals. A successful essay will develop a balanced argument weighing different views on the relationship between media and collective identity.
5. english teacher s guide grade 3 (2nd quarter)Kate Castaños
The document outlines the daily lessons and objectives for Unit 2 Week 1 of an elementary literacy program. It includes:
- An overview of the lesson parts and objectives for each of the 5 days, focusing on developing comprehension skills like using questions and graphic organizers, and decoding words with consonant digraphs.
- The materials needed each day including stories, word cards, and pictures to support the objectives.
- The procedures for each lesson, which involve activities like reading passages aloud, discussing events, practicing word decoding, and using action words in sentences. The lessons aim to build skills in comprehension, fluency, and written expression.
Vision trumps all other senses. We have better recall for visual information. Pictures beat text - recognition soars with pictures. Exercise boosts brain power. We don't pay attention to boring things and attention steadily drops after 10 minutes, so presenters should change gears every 10 minutes.
The document summarizes the kinetic molecular theory and gas laws relating pressure, temperature, volume and amount of gases. It defines key terms like ideal gas, diffusion and effusion. The kinetic molecular theory has 5 assumptions including gases being made of particles in random motion with no interparticle forces. Gas laws discussed include Boyle's law, Charles' law, Gay-Lussac's law and combined gas law. Dalton's law of partial pressures states the total pressure of a gas mixture equals the sum of partial pressures of individual gases.
This document provides examples and problems involving Boyle's Law to calculate gas properties related to changes in pressure and volume. The problems cover a range of applications including compressing gases, explosions, manufacturing diamonds, high pressure experiments, oxygen tanks for mountain climbing, shock waves from explosions, submarine pressures, and decompression sickness in divers.
This document appears to be an exam for a third semester mechanical engineering course covering engineering thermodynamics. It contains 15 multiple choice and numerical problems questions testing concepts related to the first and second laws of thermodynamics, thermodynamic cycles, properties of steam, psychrometrics, and thermodynamic processes. The questions require calculations of work, efficiency, temperatures, pressures, volumes, dryness fractions, and other thermodynamic properties. Standard reference tables on steam, Mollier charts, and psychrometric charts are permitted to solve the problems.
1. The document contains a physics exam paper with 8 multiple choice questions and 2 structured questions covering topics like pressure, Archimedes' principle, diffraction, heat capacity, and gas laws.
2. One structured question asks about calculating the effective resistance of a circuit with resistors connected in series and parallel. The other structured question discusses using properties of different metals like copper, aluminum, and tungsten in designing parts of a kettle.
3. Key concepts covered include pressure, buoyancy, wavelength, temperature change, gas volume relationships, circuit calculations, and material properties.
This document contains two daily practice problem sets for chemistry. It includes 10 multi-part chemistry problems related to gas laws, properties of gases, and gas stoichiometry. The problems cover topics like the relationship between temperature, pressure, volume and amount of gas; gas densities; and calculations involving gas mixtures. An answer key is provided at the end to check work.
Cavity insulation involves filling the gaps in the walls of houses with insulating material to reduce heat loss. The document provides an index of topics related to energy and insulation, including pages related to cavity insulation (pages 1 and 12) and heating costs (page 38).
Cavity insulation involves filling the gaps between walls with insulating material to reduce heat transfer. The passage discusses cavity insulation on pages 12 and 38 of an index to find information about cavity insulation and heating costs.
This document covers basic scientific principles relevant to building services engineering, including standard units of measurement, properties of materials, and principles of electricity. It discusses SI units, properties of common materials used in building services like metals, plastics, and ceramics. It also addresses concepts like density, conductivity, why materials break down, and corrosion. Basic calculations are provided to illustrate determining volume, density, and relative density.
Chapter v temperature and heat. htm nputi hpptrozi arrozi
1. The document discusses various topics relating to temperature and heat including different temperature scales, heat transfer through conduction, convection and radiation, and phase changes of substances.
2. Formulas are provided to calculate heat, temperature changes, expansion of solids, liquids and gases, and heat transfer through various methods.
3. Problems are included at the end of each section to apply the concepts and formulas covered.
Thermodynamics concepts discussed in the document include:
1. Thermal contact and thermal equilibrium between objects occurs through heat transfer via conduction, convection or radiation.
2. The Zeroth Law states that if two objects are each in thermal equilibrium with a third object, they are in thermal equilibrium with each other.
3. Energy will transfer from the object at the higher temperature to the object at the lower temperature when two objects at different temperatures are placed in thermal contact.
4. Thermometers measure temperature based on changes in properties like volume, dimensions, pressure or resistance with temperature. The Celsius and Kelvin scales define standardized temperature measurements.
Charles's law describes how gases tend to expand when heated. It states that when the pressure on a gas is held constant, the volume and temperature of the gas are directly related. Specifically, if the temperature increases, the volume increases, and vice versa. The document provides the history and modern statement of Charles's law, explains its basic idea with examples, and shows how to solve problems using the formula V1/T1 = V2/T2, where V is volume and T is temperature in Kelvin. Real-life applications discussed include hot air balloons, helium balloons, baking, deodorant bottles, and car tires.
Charles's law describes how gases tend to expand when heated. It states that when the pressure on a sample of a dry gas is held constant, the Kelvin temperature and volume will be directly related. Specifically, if the temperature is increased, the volume will also increase in direct proportion. The document provides examples of problems applying Charles's law formula to calculate new volumes given changes in temperature. It also gives real-life examples of how Charles's law applies, such as how hot air balloons and deodorant bottles work based on gas expansion with temperature changes.
1. The document discusses the fundamental properties and laws governing gases, including pressure, volume, temperature, amount of gas, and how they relate based on Boyle's law, Charles' law, Gay-Lussac's law, Avogadro's law, and the ideal gas law.
2. Key concepts covered include the definition of pressure, different pressure units, relationships between pressure and volume, relationships between temperature and volume, and how the number of gas molecules affects volume.
3. Examples are provided to demonstrate how to use the gas laws to calculate pressure, volume, temperature, or amount of gas under different conditions.
The document discusses several gas laws including Boyle's law, Charles' law, Gay-Lussac's law, Avogadro's law, the combined gas law, and the ideal gas law. It provides definitions of these laws and examples of calculations using each one. The key relationships covered are: the inverse relationship between pressure and volume at constant temperature (Boyle's law), the direct relationship between volume and temperature at constant pressure (Charles' law), the direct relationship between pressure and temperature at constant volume (Gay-Lussac's law), the relationship between volume and amount of gas at constant pressure and temperature (Avogadro's law), and the ideal gas law which relates pressure, volume, temperature,
This document discusses the behavior of gases and gas laws. It provides explanations of kinetic molecular theory, Boyle's law, Charles' law, and the combined gas law. For example, it states that Boyle's law describes the inverse relationship between the pressure and volume of a gas at constant temperature. It also gives examples of using the gas laws to solve problems involving changes in pressure, volume, and temperature of gases.
Exposure to elevated temperatures and cooled under different regimes – a stud...eSAT Publishing House
This study examined the effects of elevated temperatures and different cooling regimes on blended concrete. Concrete cubes containing 30% ground granulated blast furnace slag were subjected to temperatures from 150°C to 550°C and cooled via furnace cooling, air cooling, or sudden water cooling. Weight loss and residual compressive and split tensile strengths were then tested. Results showed that weight and strengths decreased significantly with higher temperatures and depended strongly on the cooling method, with furnace cooling producing the best retention of properties. Furnace and air cooling resulted in gradual heat loss while sudden cooling induced thermal shock. This research provides information about fire-damaged concrete structures and their residual performance.
Exposure to elevated temperatures and cooled under different regimes a stud...eSAT Journals
Abstract Fire is one of the most destructive powers to which a building structure can be subjected, often exposing concrete elements to elevated temperatures. The relative properties of concrete after such an exposure are of great importance in terms of the serviceability of buildings. Unravelling the heating history of concrete and different cooling regimes is important to forensic research or to determine whether a fire-exposed concrete structure and its components are still structurally sound or not. Assessment of fire-damaged concrete structures usually starts with visual observation of colour change, cracking and spalling. Thus, it is important to know the effect of elevated temperatures on strength retention properties of concrete. This study reports the effect of elevated temperature on the mechanical properties of the concrete specimen obtained by replacing 30% OPC by GGBS and cooled differently under various regimes. In the heating cycle, the specimen were subjected to elevated temperatures ranging from 150 0C to 550 0C, in steps of 100 0C with a retention period of 1 hour. Then the cooling regimes studied include, furnace cooling, air cooling and sudden cooling. After exposure to elevated temperatures and cooled differently, the weight loss, residual compressive and split tensile strengths retention characteristics are studied. Test results indicated that weight and both strengths significantly reduce with an increase in temperature and are strongly dependent on cooling regimes adopted. Index Terms: Elevated temperature, Residual compressive strength, Cooling regimes, and Blended concretes
This document outlines the program for a Physics 2 course covering fluid mechanics and thermal physics. It includes 5 chapters: fluid mechanics, heat and temperature, heat and the first law of thermodynamics, the kinetic theory of gases, and entropy and the second law of thermodynamics. References and websites for further information are also provided. The document then provides an in-depth overview of Chapter 4 on the kinetic theory of gases, covering topics like the molecular model of an ideal gas, the equipartition of energy, and the Boltzmann distribution law. It includes examples and problems related to these concepts.
Similar to Revision Exercise (A) Answers Section B (19)
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2. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2]
3. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] Calculations are required.
4. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] Calculations are required. We cannot assume that the increase in volume will cause it to burst.
5. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] Calculations are required. We cannot assume that the increase in volume will cause it to burst. Write equations and substitute correctly with the correct units.
6. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2]
7. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C . Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2]
8. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C ? Assume that the pressure of the gas in the balloon remains constant. [2]
9. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant . [2]
10. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] p V f = n R T f
11. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2]
12. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] At 5 C 975 cm 3
13. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] At 5 C 975 cm 3 At 25 C ? cm 3
14. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] p V f = n R T f V f / T f = (n R) / p At 25 C ? cm 3
15. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] p V f = n R T f V f / T f = (n R) / p We have 2 unknowns, n & p At 25 C ? cm 3
16. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] p V f = n R T f V f / T f = (n R) / p We have 2 unknowns, n & p We can find them out. This is how. At 25 C ? cm 3
17. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] p V i = n R T i V i / T i = (n R) / p At 5 C 975 cm 3
18. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] p V i = n R T i V i / T i = (n R) / p p V f = n R T f V f / T f = (n R) / p At 5 C 975 cm 3 At 25 C ? cm 3
19. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] V i / T i = V f / T f V f = (V i T f ) / T i Substitute the correct values in the correct units. At 5 C 975 cm 3 At 25 C ? cm 3
20. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] V i / T i = V f / T f V f = (V i T f ) / T i Substitute the correct values in the correct units.
21. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] V i / T i = V f / T f V f = (V i T f ) / T i Substitute the correct values in the correct units. V f = 975 X 10 -6 ( 25 + 273) / (5 + 273) = 1045 X 10 -6 m 3
22. 1. A balloon can hold 1000 cm 3 of air before bursting. The balloon contains 975 cm 3 of air at 5 C. Will it burst when it is taken into a house at 25 C? Assume that the pressure of the gas in the balloon remains constant. [2] V i / T i = V f / T f V f = (V i T f ) / T i Substitute the correct values in the correct units. V f = 975 X 10 -6 ( 25 + 273) / (5 + 273) = 1045 X 10 -6 m 3 It will BURST!
23.
24.
25.
26. 2 b) State two assumptions made of the kinetic theory of gases. [2]
27. 2 b) State two assumptions made of the kinetic theory of gases. [2] Any two The particles of gas are in constant, random motion and collide with each other and the walls of the container. The volume of the gas particles are negligible as compared to the volume of the gas. Collisions of the particles with each other and the walls of the container are perfectly elastic. There are no intermolecular forces between molecules of gas.
28. 2 c) List two factors that cause real gases to deviate from ideal gas behaviour. [1]
29. 2 c) List two factors that cause real gases to deviate from ideal gas behaviour. [1] Any 2 Temperature Pressure Nature of Gas
30. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2]
31. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] High Temperature and Low Pressure
32. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] High Temperature
33. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] High Temperature At high temperatures, gas particles possess more kinetic energy and thus are able to overcome the intermolecular forces between them. This will allow them to behave more ideally.
34. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] High Temperature At high temperatures , gas particles possess more kinetic energy and thus are able to overcome the intermolecular forces between them. This will allow them to behave more ideally .
35. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] Low Pressure
36. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] Low Pressure At low pressures, gas molecules are not as closely packed, therefore the volume of the gas particles are negligible as compared to the volume of the gas.
37. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] Low Pressure At low pressures, gas molecules are not as closely packed, therefore the volume of the gas particles are negligible as compared to the volume of the gas. At low pressures, gas molecules are further apart and therefore do not form intermolecular bonds as easily. Thus behaving more ideally.
38. 2 d) Under what conditions of temperature and pressure do real gases behave most ideally? Give reasons for your answers. [2] Low Pressure At low pressures , gas molecules are not as closely packed , therefore the volume of the gas particles are negligible as compared to the volume of the gas. At low pressures , gas molecules are further apart and therefore do not form intermolecular bonds as easily . Thus behaving more ideally.
39. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2]
40. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] We can find the no. of moles of air so 21% of it is oxygen.
41. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] 101 kPa = 101 000 Pa
42. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] 101 kPa = 101 000 Pa 500 cm 3 = 0.0005 m 3
43. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] 101 kPa = 101 000 Pa 500 cm 3 = 0.0005 m 3 60 0 C = 333 K
44. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] 101 kPa = 101 000 Pa 500 cm 3 = 0.0005 m 3 60 0 C = 333 K p V = n R T where n is the number of moles of air n = ( p V / R T) = ( 101 000 X 0.0005 ) / 8.314 X 333 = 0.01824 mol
45. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] p V = n R T where n is the number of moles of air n = ( p V / R T) = ( 101 000 X 0.0005 ) / 8.314 X 333 = 0.01824 mol 21% of n(Air) = n(O 2 )
46. 2 e) A Volvo engine has a cylinder volume of about 500 cm 3 . The cylinder is full of air at 60 o C and a pressure of 101 kPa. i) Calculate the number of moles of oxygen in the cylinder. (% composition by volume of oxygen in air = 21) [2] p V = n R T where n is the number of moles of air n = ( p V / R T) = ( 101 000 X 0.0005 ) / 8.314 X 333 = 0.01824 mol 21% of n(Air) = n(O 2 ) n(O 2 ) = 0.01824 X 21% = 0.00383 mol
47. 2 Assume that the hydrocarbons in gasoline have an average molecular mass of 100 and react with oxygen in a 1:12 mole ratio and the pressure change is negligible after injection. ii) What is the mass of gasoline that needs to be injected into the cylinder for complete reaction with the hydrocarbons. [2]
48. 2 Assume that the hydrocarbons in gasoline have an average molecular mass of 100 and react with oxygen in a 1:12 mole ratio and the pressure change is negligible after injection. ii) What is the mass of gasoline that needs to be injected into the cylinder for complete reaction with the hydrocarbons. [2] n(O 2 ) : n(Hydrocarbon) 12 : 1
49. 2 Assume that the hydrocarbons in gasoline have an average molecular mass of 100 and react with oxygen in a 1:12 mole ratio and the pressure change is negligible after injection. ii) What is the mass of gasoline that needs to be injected into the cylinder for complete reaction with the hydrocarbons. [2] n(O 2 ) : n(Hydrocarbon) 12 : 1 It is a mixture of hydrocarbons so u cannot write like C x H y
50. 2 Assume that the hydrocarbons in gasoline have an average molecular mass of 100 and react with oxygen in a 1:12 mole ratio and the pressure change is negligible after injection. ii) What is the mass of gasoline that needs to be injected into the cylinder for complete reaction with the hydrocarbons. [2] n(O 2 ) : n(Hydrocarbon) 12 : 1 It is a mixture of hydrocarbons so u cannot write like C x H y n(hydrocarbons) = 0.00383 mol / 12 = 3.192 X 10 -4 mol
51. 2 Assume that the hydrocarbons in gasoline have an average molecular mass of 100 and react with oxygen in a 1:12 mole ratio and the pressure change is negligible after injection. ii) What is the mass of gasoline that needs to be injected into the cylinder for complete reaction with the hydrocarbons. [2] n(O 2 ) : n(Hydrocarbon) 12 : 1 It is a mixture of hydrocarbons so u cannot write like C x H y n(hydrocarbons) = 0.00383 mol / 12 = 3.192 X 10 -4 mol mass = M r X mol = 100 X 3.192 X 10 -4 = 0.0319 g
52. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. a) Write an ionic equation for the neutralization reaction. [1] b) Calculate the number of moles of X 2 O 6 dissolved in water. [2] c) Calculate the relative atomic mass of X and predict the identity of X. [3]
53. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. a) Write an ionic equation for the neutralization reaction. [1]
54. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. a) Write an ionic equation for the neutralization reaction. [1] Acid Base Reaction. H + (aq) + OH - (aq) H 2 O (aq)
55. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2]
56. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2]
57. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2]
58. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2] H + + OH - H 2 O n(OH - ) = (52.3/1000) X 0.100 = 0.00523 mol
59. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2] H + + OH - H 2 O n(OH - ) = (52.3/1000) X 0.100 = 0.00523 mol n(H + ) = n(OH - ) = 0.00523 mol
60. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2] H + + OH - H 2 O n(OH - ) = (52.3/1000) X 0.100 = 0.00523 mol n(H + ) = n(OH - ) = 0.00523 mol 3 H + : 1 X 2 O 6
61. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. b) Calculate the number of moles of X 2 O 6 dissolved in water. [2] H + + OH - H 2 O n(OH - ) = (52.3/1000) X 0.100 = 0.00523 mol n(H + ) = n(OH - ) = 0.00523 mol 3 H + : 1 X 2 O 6 n(X 2 O 6 ) = 0.00523 / 3 = 1.74 X 10 -3 mol
62. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. c) Calculate the relative atomic mass of X and predict the identity of X. [3]
63. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. c) Calculate the relative atomic mass of X and predict the identity of X. [3]
64. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. c) Calculate the relative atomic mass of X and predict the identity of X. [3] M r of X 2 O 6 = Mass / Mole = 0.47 / (1.74 X 10 -3 ) = 270
65. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. c) Calculate the relative atomic mass of X and predict the identity of X. [3] M r of X 2 O 6 = Mass / Mole = 0.47 / (1.74 X 10 -3 ) = 270 M r of X = [270 – (6 X 16)] / 2 = 87
66. 3. When 1 mole of X 2 O 6 is dissolved in water, 3 moles of hydrogen ions is liberated. 0.47 g of X 2 O 6 is dissolved in water and the resulting solution required 52.3 cm 3 of 0.100 mol dm -3 sodium hydroxide solution for complete neutralization. c) Calculate the relative atomic mass of X and predict the identity of X. [3] M r of X 2 O 6 = Mass / Mole = 0.47 / (1.74 X 10 -3 ) = 270 M r of X = [270 – (6 X 16)] / 2 = 87 X is Strontium