3. (a) Determine the diffusion coefficient of O2 (σ = 0.40 nm2 ) at 1 bar...

3. (a) Determine the diffusion coefficient of O2 (σ = 0.40 nm2 ) at 1 bar and 25 o C?

(b) The diffusion coefficient of C2H6 at 298 K and 1.00 atm is 1.307×10-5 m2 s-1 . What is the collision diameter of C2H6 based on its diffusion coefficient?

(c) Calculate the rate of diffusion, Jz of a gas at 300 K with λ = 1.00 × 10-5 cm, d = 3.16 × 10-8 cm, and M = 30.0 g mol-1 , if a concentration gradient is 1.00 × 10-7 mol cm4 ?

(d) The sheets of copper area of 1.50 m2 are separated in air by 10.0 cm. What is the rate of heat transfer from the warm sheet, 50°C to the cold sheet, - 10°C?

Given : κ (air) = 0.1241 J K-1 m-1 s-1

Expert Solution

Amanda K answered 10 months ago

Determine if the language ?={?^?∶?=?^3????????≥0}over Σ={?}is regular.

1. If the oxygen diffusion coefficient in tissue is assumed to be 1.1x10-5 cm2/s and fluid...

1. If the oxygen diffusion coefficient in tissue is assumed to be 1.1x10-5 cm2/s and fluid velocity is 1 mm/s, how large a distance between capillaries is required for convection to play an equally significant role as diffusion? Assuming an average distance between capillaries of 100 mm, does convection play a significant role? Use Peclet number to justify answers.

1) The diffusion coefficient of the protein BSA in water at 25°C is 6.7 10-11 m2s-1....

1) The diffusion coefficient of the protein BSA in water at 25°C is 6.7 10-11 m2s-1. Calculate the hydrodynamic volume of this protein assuming it can be regarded as a sphere Vh = 2) The molecular weight of BSA is 66,430 g/mol, and its partial specific volume (the inverse of the density) is 0.734 cm3/g. What is the volume of one “dry” molecule of BSA? (i.e. the unhydrated protein) V =

What is Diffusion? List 3 factors that increase the rate of diffusion

Calculate the diffusion constant of argon at 20°C and at the following pressures. Take σ =...

Calculate the diffusion constant of argon at 20°C and at the following pressures. Take σ = 0.36 nm2. If a pressure gradient of 1.0 bar·m−1 is established in a pipe, what is the flow of gas due to diffusion? (a) 2.02 Pa (b) 202 kPa (c) 20.2 MPa

3. Let S3 act on the set A={(i,j) : 1≤i,j≤3} by σ((i, j)) = (σ(i), σ(j))....

3. Let S3 act on the set A={(i,j) : 1≤i,j≤3} by σ((i, j)) = (σ(i), σ(j)). (a) Describe the orbits of this action. (b) Show this is a faithful action, i.e. that the permutation represen- tation φ:S3 →SA =S9 (c) For each σ ∈ S3, find the cycle decomposition of φ(σ) in S9.

4.14 (a) Calculate the diffusion coefficient for oxygen ions in a pure ZrO2 electrolyte at T...

4.14 (a) Calculate the diffusion coefficient for oxygen ions in a pure ZrO2 electrolyte at T = 1000∘C given ΔGact = 100 kJ∕mol, ?0 = 1013 Hz. ZrO2 has a cubic unit cell with a lattice constant a = 5 Å and contains four Zr atoms and eight O atoms. Assume that the oxygen–oxygen “jump”distance Δx = 1 2 a. (b) Calculate the intrinsic carrier concentration in the electrolyte givenΔh? = 1 eV. (Assume vacancies are the dominant carrier.) (c)...

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3. (a) Determine the diffusion coefficient of O2 (σ = 0.40 nm2 ) at 1 bar...

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