When equal moles of the following acids are dissolved in 1 L of H2O- w.docx
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When equal moles of the following acids are dissolved in 1 L of H 2 O, which acidic solution will have lowest concentration of ions? HI HF HClO4 HNO 3 HCl Please explain why! Solution All the acids given are the strongest acids. But among all, HI > HBr > HClO 4 > HCl > HNO 3 The above order it the acidic strength. Among all the given acids, HI is the strongest and HNO3 is the weakest. Strongest acid dissociates completely in H 2 O (There will not be any undissociated molecule). But due to the common ion effect(H + ), the HNO 3 acid will have lowest concentrations of ions. Thanks and hope u got the answer. .
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When Sequoia measured the sound from the tube open at both ends, the Fourier transform plot looked very noisy and had a lot of peaks spread out all over the graph window. She should,
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Initially it may take many trials to get a good pattern
The important thing to get good pattern is to be sure to strike the tube after her
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b. False.
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When KCI dissolved in water When KCI dissolved in waterSolutionAns -.docx
When KCI dissolved in water
When KCI dissolved in water
Solution
Ans :
KCl is an ionic compound. So when it is dissolved in water , it splits into its ions : K + and Cl - .
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When KCI dissolved in water When KCI dissolved in waterSolutionAns -.docx
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Solution
Ans :
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What type(s) of bonding would be expected for each of the following ma.docx
What type(s) of bonding would be expected for each of the following materials:
Diamond
Zirconium Oxide
Argon Gas
Rubber
Bronze (a mixture of copper and tin)
Titanium (Ti)
Polyvinyl chloride (PVC)
CaF2
Solution
1) DIAMOND - Covalent Bond
2) Zirconium Oxide - ionic
3)ARGON - Van der walls as it is and inert gas
4)RUBBER - Covalent with some van der walls forces
5)BRONZE - mettalic since it is a mettalic alloy
6)TITANIUM - metallic
7)Polyvinyl chloride (PVC) - covalent
8)CaF2 - ionic
.
Which of the following are features of Btrfs- relocating files and sub.docx
Which of the following are features of Btrfs?
relocating files and subtrees online
removing and adding devices online
running filesystem checks & scrubs online
d) multiple file systems (subvolumes) within a single partition
Solution
The features of Btrfs is:
d) multiple file systems (subvolumes) within a single partition
.
Which of the following accounting principles requires businesses to re.docx
Which of the following accounting principles requires businesses to record depreciation?
Solution
1) Matching principle of accounting requires business to record depreciation for the accounting period . This principle requires that asset cost to be allocated to depreciation expense over the life of the asset.By assigning the portion of asset cost over the life of the asset to various financial statements the accountant is matching the portion of the assets cost with each period in which the asset is used
2) Cost principle:This principle requires that depreciation expense reported on the income statementand the asset cost reported in the balance sheet should be disclosed at the historical cost
.
Which method would answer this question- To investigate if the use of.docx
Which method would answer this question. To investigate if the use of social media is associated with shyness and loneliness?
Choose from the following methods : Case histories, naturalistic observation, laboratory observation, tests, correlational studies, and experiments.
Solution
Correlation studies, results from the study further revealed that loneliness completely mediated the relationship between shyness and generalized problematic continous Internet use. Implications for intervention work addressing both loneliness and shyness issues facing adolescents who are problematic users of the Internet and social media.
.
What type of intermolecular forces exist in NH3 and H2S- dispersion fo.docx
What type of intermolecular forces exist in NH3 and H2S?
dispersion forces, dispersion forces and H-bond, dispersion forces & dipole-dipole forces
Solution
In NH 3 ,intermolecular forces present are hydrogen bonds . The hydrogen bonds are many magnitudes stronger than other intermolecular forces in NH 3 .
In H 2 S , Sulfur atom have 6 valency electrons and hydrogen atoms have 2 valence electrons. The central sulfur atoms has 4 entities around it. Two hydrogen atoms, and two lone non-bonding electron pairs. According to VSEPR theory, this means that the shape of the molecule is bent and because of the asymmetrical shape, the molecule is polar.The intermolecular force which polar molecules take part in are d ipole-dipole forces .
.
Which method of evaluating capital investment proposals uses the conce.docx
Which method of evaluating capital investment proposals uses the concept of present value to compute a rate of return?
Average rate of return
Accounting rate of return
Cash payback period
Internal rate of return
Solution
d)Internal Rate of Return, IRR is computed using net present value, from it discount rate is identified to equates present value of future cash flow of an investment with initial investment.
.
Which molecule(s) will experience the London force- Select all that ap.docx
Which molecule(s) will experience the London force? Select all that apply.
Solution
The London force is the weakest intermolecular force.
The London dispersion force is a temporary attractive force that results
when the atom forms tempory dipole moment
as NH3 and H2O have permanent dipole moment so they will not experience London force.
where N2 and H2 doesn\'t possess any permanent dipole moment
so in N2 and H2 atoms, the tempory dipole moment can be formed so they can experience London force
the answer is N2 and H2
.
Which metal is the stronger reducing agent- copper or zinc- iron or co.docx
Which metal is the stronger reducing agent, copper or zinc? iron or copper? iron or zinc? In the box at the right, construct a redox couple table for iron, copper, zinc, and their ions. Arrange the three metals in a column at the right-hand side, with the strongest reducing agent at the bottom and the weakest at the top. To the left of each metal symbol make a slash; to the left of the slash write the symbol for the oxidized form of the metal-for example, Cu2+/Cu. You now have a brief redox couple table. (in i ob Which is the strongest oxidizing agent: iron(II) ion, copper(lI) ion, or zinc ion? Explain how this table summarizes your observations. on MAAn
Solution
Stronger reducing agent
Copper or zinc = zinc
Iron or copper= iron
Iron or zinc =zinc
Redox couple table
Copper Cu 2+ /Cu
Iron. Fe 3+ /Fe
Zinc. Zn 2+ /Zn
.
Which is not true of the Progressives- options- a)They consisted predo.docx
Which is not true of the Progressives?
options:
a)They consisted predominantly of middle-class reformers.
b) They proposed sweeping changes to the capitalist system, such as government ownership of railroads.
c)They believed government should be more active in promoting the welfare of the people.
d)They opposed the laissez-faire of the past.
e)They hoped to reduce government corruption by appointing a new generation of college-educated experts to key government positions.
Solution
option (b) is correct because progressives belived that government should be more active in promoting the welfare of the people and also agreed with some of the ideas of the populists and they are also more conservative.
Progressives belived in reforming society and also government rather than proposing sweeping changes to the capitalist system.
.
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