1. Why is the steady state concentration gradient linear in equimolecular counter diffusion? 2. Explain why...

1. Why is the steady state concentration gradient linear in equimolecular counter diffusion?

2. Explain why the dissolution of a crystalline particle in a solution can be speeded up by (a) stirring the solution and (b) by crushing the particle, from a mass transfer perspective.

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genius_generous answered 2 years ago

nvestigation of Factors Affecting the Rate of Diffusion In addition to the concentration gradient (i.e. the...

nvestigation of Factors Affecting the Rate of Diffusion In addition to the concentration gradient (i.e. the difference in the concentration of particles between two environments) there are many other factors known to affect the rate of diffusion including; temperature the size of the diffusing particles the viscosity of the medium through which the particles move The purpose of this exercise is for you to work in groups to design experiments to test two of the factors listed above. You will...

By using an appropriate example and diagram, explain the steady state diffusion of component A through...

By using an appropriate example and diagram, explain the steady state diffusion of component A through non-diffusing component B for molecular diffusion of gases.

1. True or false: Urea is reabsorbed passively by diffusion along its concentration gradient as water...

1. True or false: Urea is reabsorbed passively by diffusion along its concentration gradient as water is reabsorbed. Select one: True False 2. Anti-diuretic hormone (=vasopressin) acts on collecting duct cells with a vasopressin receptor by the following mechanism: Select one: a. activation of adrenergic receptors b. increase in Na+/K+ pumps in the basal membrane c. increase in Na+/K+ pumps in the apical membrane d. exocytosis of vesicles that contain aquaporins e. decrease in cell membrane cholesterol 3. A decrease...

The steady-state diffusion flux through a metal plate is 5.4 x 10-10 kg/m2 s at a temperature of 827 °C (1100 K) and when the concentration gradient is -350 kg/m4

The steady-state diffusion flux through a metal plate is 5.4 x 10-10 kg/m2 s at a temperature of 827 °C (1100 K) and when the concentration gradient is -350 kg/m4 . Calculate the diffusion flux at 1027 °C (1300 K) for the same concentration gradient and assuming an activation energy for diffusion of 150,000 J/mol.

1) Describe passive transport. 2) Define concentration gradient, electrical gradient, and electrochemical gradient. 3) What factors...

1) Describe passive transport. 2) Define concentration gradient, electrical gradient, and electrochemical gradient. 3) What factors play a role in the rate of diffusion? 4) Explain the difference between simple diffusion and facilitated diffusion. 5) Which type of molecules move via facilitated diffusion? 6) Why is active transport necessary? 7) What role does the Na-K pump play in active transport? 8) How is primary active transport different from secondary active transport? 9) What is the mechanism for glucose transport across...

Write the Gradient Descent definition and explain how to apply gradient descent on Linear Regression.

A) Explain why the steady state growth rate is independent of the savings rate in the...

A) Explain why the steady state growth rate is independent of the savings rate in the Solow growth model? B) Suppose two economies A and B exhibit the same exogenous growth rate of the labour force. There is no technical progress and the savings propensities are the same in both economies. The initial capital stock in country A is much larger than that of country B. Compare the transitional dynamics and the steady state growth paths of the two economies.

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1. Why is the steady state concentration gradient linear in equimolecular counter diffusion? 2. Explain why...

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