What are the factors affecting diffusion Explain how in 1-2 sentenc.pdf

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What are the factors affecting diffusion? Explain how in 1-2 sentences each. Solution Diffusion is the process of spreading more widely(it may be a liquid or gas).There are several factors that can effect the process of diffusion.few can assist the diffusion and few can persist the diffusion. The following are the several factors with their effect on diffusion process: A)Temperature: As the temperature increases diffusion occurs more rapidly.these two are directly proportional to each other.for example when you increase the temperature of air it rushes up as its density decreases. B)Particle distance: every substance is composed of infinite particles.for the particle which is closer it takes less time to diffuse and for the particle which is farthest it takes more time to diffuse.these two are directly proportional to each other. C)Concentration difference: A chamber divided into two compartments and filled with two different fluids is the example of this type.particle diffuses from one side of the wall to the other side based upon the difference in concentration on both sides.hence the rate of diffusion increases with increase in concentration difference. D)Particle size: Particle size matters alot because a smaller particle at a given temperature moves more faster than the larger one at the same temperature.hence particle size is inversly proportional to the diffusion rate.

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A solution at 0° Kelvin will undergo: A) A faster rate of diffusion B) A slower rate of diffusion C) Metamorphosis D) No diffusion Solution D. No diffusion All molecules in any substance, be it solid, liquid or gas, are in a continuous state of movement or vibration and the warmer a substance is, the faster its molecules move. The average speed of this thermal motion also depends upon the mass of the molecule. In solutions, such rapidly moving molecules cannot travel very far before colliding with other molecules. They bounce off each other like rubber balls, undergoing millions of collisions every second. Each collision alters the direction of the molecule\'s movement, so that the path of any one molecule become unpredictable. The random thermal motion of molecules in a liquid or gas will eventually distribute them uniformly throughout the container. Thus, if we start with a solution in which a solute is more concentrated in one region than another, random thermal motion will redistribute the solute from regions of high concentration to regions of lower concentration until the solute reaches a uniform concentration throughout the solution. This net movement of molecules from regions of higher to lower concentration as a result of their thermal motion is known as diffusion. Hence, it is clear that at an absolute zero temperature would stop diffusion..

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How do each of the factors listed in (1) affect the diffusion of solutes? (1) size of the molecule, the polarity of solute, temperature of the solution, and pH of the solution. Solution Diffusion: Diffusion is a process of passive transport in which molecules diffuse down their concentration gradient. Diffusion of molecules mainly depends on the lipid solubility and their size and polarity. Small molecules such as water, gases such as oxygen, carbon dioxide, hydrogen ions, etc. can pass through the cell membranes and membranes of cellular organelles by means of simple diffusion. Factors affecting diffusion include, 1). Size of the molecules: Increasing molecule size decreases the diffusion tendency 2). The polarity molecules: Increasing polarity decreases the diffusion ability and vice versa. Because the cell membrane is a lipid bilayer 3). Temperature of the solution: Increasing temperature increases the diffusion rate and vice versa. Increase in temperature increases the movement of molecules in the solution. 4). pH of the solution: It depends upon the properties of the solute. If the altered pH affects the stability of the solute, the diffusion rate changes..

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(1) is the movement of atoms, ions and other species through a material. There are two driving factors responsible for this phenomenon. These factors include _(2)_ and _(3)_. In Materials we are primarily concerned with interdiffusion as opposed to self diffusion as this is the mechanism that is involved in a variety of material processes such as carburizing and nitriding. There are two mechanisms for interdiffusion these include (4) which is the movement of atoms from one vacancy site to another and (5) which is the movement of atoms from one interstitial site to another The _(6)__ mechanism results in a faster rate of diffusion than the (7)_ mechanism because there are more _(8)_ sites and because this mechanism also has a lower (9) energy. There are three types of diffusion and these include _.(10)_ , __(11)___ and ___(12)_. The slowest type is _(13)_ and the fastest type is _(14)_. We can use _(15)_ to predict the rate of diffusion. Diffusion will occur faster in crystal structures that have lower (16) such as BCC as opposed to those that have higher _(17)_ such as HCP. Diffusion is also affected by_(18)_ and _(19)_. _(20)_ which is when a material subjected to a constant stress that is below its yield stress at elevated temperatures will plastically deformed is a diffusion controlled property. Section 2 word bank (you may use a word more than once and you do not have to use all of the words). Solution 1. Diffusion 2. Concentric Differences 3.Temperature 4. Vacancy Diffusion 5. Interstitial diffusion 6. Interstitial diffusion 7. Vacancy Diffusion 8. Interstitial 9. Activation 10 Interstitial diffusion 11. Vacancy Diffusion 12 Interstitial 13.. Vacancy Diffusion 14. Interstitial diffusion 15. Flicks first law 16. packing Fraction 17. Packing Fraction 18. Temperature 19. Grain Boundary 20. Creep.

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List three different types of heat transfer and discuss their differences Solution there are three types of heat transfer : 1) conduction 2) convection 3) radiation Difference: CONDUCTION: Conduction is heat transfer between part of the same material or different material which are adjacent to one another.Conduction is the transfer of heat through vibration and collision of neighbouring particles. (This mostly occurs only in solids as the particles are very close to one another. Conduction does not work well in liquids and gases due to the particles being far away from another.) CONVECTION: Convection is heat transfer from one material to another via a medium, such as air or water. Convection occurs only in liquids and gased. In mediums where it is possible for particles to move from one place to another. RADIATION: Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted though empty space by thermal radiation often called infrared radiation. Radiation occurs almost at every instant. It does not require a medium and it\'s effficiency is based on the texture of the recieving surface. Radiation is an electromagnetic way i. g the way we get heated from sun..

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Describe the following structuresfunctions or cells Dermal, vascul.pdf

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Describe the accounting and finance structure in an organization. Solution The accounting and finance departments structure in an organisation will depend on the size of the organisation, the kind of products or services it provides and requirements of law of the land.The larger the company, the more accounts clerks and accountants for the processing of the various transaction and business entries are required. Like-wise for a smaller firm only three to four accoutants and clerks are required in the finance and accounting department. The other structure of Accounting and finance department are : (a) Account Clerks : The data entry of the transaction and making of the vouchers are done by the account clerks. They also fulfills the responsibilities like filing of documents and getting the authorisation on the vouchers. They also process the bill and their payments. They also take care of the bank transactions and reconciliations. (b) Accountants and Full Charge Bookkeepers : The Accountants are the supervisors of the accounts and finance department who controls and guide the accounts clerks at the operatinal level. They provides services like making of adjusting entries and processing the payroll transactions of the company at the end of the month. c) Department Controllers and Accounts Managers : The managers have the role of supervisors who guides the Accountants and clerks and ensures the control over the departments activities and working according to the requirement at various point of time. They are respoinsible for all the frauds to happen, so the Controllers takes all the steps to prevent any fraud to happen. The internal controls are in their hands. Controllers are also responsible for preparing financial documents like budgets, financial statements and audit reports and rectification reports. (d) Chief Financial Officer : The Chief Financial Officer (CFO) is the top-most position of the Accounting and Finance Department of the organization. They are mainly responsible for the hiring of persons in the department and keep a close look at the working and results of the department. They are also responsible for the fulfilment of other departments requirements and paying off the taxes and minimisation of the tax expenses using various options to evade tax. The controlling of the cost accounting of the organisation is also in their hands. Thus, the above points constitutes the Accounting and Finance Departments\' structure of an organisation. ============================================.

Describe the accounting and finance structure in an organization..pdf

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Consider an assembly of thousands of people, all screaming, yelling, and drinking, while a smaller group in the center of the assembly area fights over the remains of a dead pig. Why might this be seen as significant in anthropological terms if it were part of the research described in Horace Miner’s interpretations of Nacirema culture? a. It helps to understand how to avoid judgment about cultural beliefs and practices. b. It affords a window into the nature of spectacle. c. It illustrates mass ritual effectively. d. It is a powerful example of participant observation. Solution If it were a part of the research described in Horace Miner’s interpretations of Nacirema culture this might be seen as significant in anthropological terms because It helps to understand how to avoid judgment about cultural beliefs and practices. (a. It helps to understand how to avoid judgment about cultural beliefs and practices.).

Consider an assembly of thousands of people, all screaming, yelling,.pdf

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