Membrane: Material Microporous mica Thickness, pm 4.24 Average pore diameter, Angstroms Tortuos ity, 7 Porosity, e 88.8 1.1 0.0233 Solutes (in aqueous solution at 25°C): g/em molecular D; x 106 diameter, cm/s Solute MW Cio CiL 1 Urea 60 13.8 5.28 0.0005 0.0001 2 B-Dextrin 1135 3.22 17.96 0.0003 0.00001

Q: • Gases A and B are diffusing towards each other at steady state by equimolar counter diffusion…

A: The case is diffusion through variable cross section area. The flux would change but rate of mass…

Q: A gas impermeable spherical heterogeneous film from a stationary gas film. It gives the following…

A: Here for the question , we need to derive the equation that gives molar flux  of A in the still gas…

Q: The general scheme of an heterogeneous catalyzed reaction can be simplified with this scheme: Gas…

A: The general scheme diagram is given as:

Q: When a liquid is passing in ai bulk phase the convective flux of the whole stream relative to the…

A: To choose the correct option that relates convective flux of the whole stream for a  liquid under…

Q: An enzyme is immobilized uniformly in a gelatin slab (thickness: L and area: A). One side is in…

A: GIven,

Q: Which of the following limiting form of Fick's First Law of Diffusion generates a non-linear…

A:

Q: Consider sulfur dioxide at a concentration of 1 mg/m³ in the atmosphere. How much sulfur dioxide…

A: Given that- Cocentration of SO2 , C=1mg/m3 Height(length) of trachea, l=10 cm= 0.1 m Diameter of…

Q: What are the three main mechanisms of (a) iffusion in mass transfer processes? Why is the effective…

A: Solution(a) Diffusion is one of the mass transfer process , in which the molecules in a mixture…

Q: Equation Q3.1 describes the diffusion of a solute through the liquid film around a spherical solid…

A: A solute is diffused through a liquid film around a spherical solid particle. The concentration…

Q: Estimate the diffusion at 25°C for oxygen dissolved in water using Stokes-Einstein equation and…

A: Given that: For oxygen dissolved in water, Radius of oxygen molecule, R0 = 1.73×10-8 cm Temperature,…

Q: Consider a microfluidic Y-channel in which we have a co-flow of two aqueous suspensions as in the…

A: Given that- Channel width, w=300μm= 3.0×10-4m Channel height, h=100 μm=1.0×10-4m Average flow…

Q: 3. Oxygen diffusion in cells Oxygen is consumed in body tissues or by cells in vitro at a rate that…

A:

Q: 13. (a) What are the three main mechanisms of Diffusion in mass transfer processes? (b) Why is the…

A: Dear subscriber ! As per our authoring policy, we have answered the first three of the five subparts…

Q: A plate of BCC iron is exposed to a carburizing (i.e, carbon-rich atmosphere) on one side and a…

A: Given: Temperature = 700°C=700+273K=973K position 1(z1)=2mm=2mm×m1000mm=0.002m position…

Q: In a tower 2 components, named as A and B, are present. The components are mutually present both in…

A:

Q: is the driving force of this diffusion phenomenon?

A: Given that Temp.,T = 1500 C = 1500+273 =1773 Flux  = 1.574 x 1012 atomscm2s Diffusivity =4 x…

Q: Find the distance traveled by Brown diffusion(x=(2Dt)^1/2 ) and the distance traveled by…

A: Given : Particle diameter, particle density,   Density of water, Acceleration due to gravity,…

Q: Consider a mixture containing equal moles of He, O2, and CH4. Determine multicomponent diffusion…

A:

Q: An enzyme is immobilized uniformly in a gelatin slab (thickness L and area 4). One side is in…

A:

Q: A steel machine part is to be carburized in a furnace. The steel initially has a carbon content of…

A:

Q: Sherwood Number relates the mass transfer coefficient to mass diffusivity. It is known to be…

A: Given: Sherwood number is directly proportional to the length of diffusion L. It is related to the…

Q: The alkali metals (Li, Na and K) are promising energy storage materials used in batteries.…

A: Consider the temperature to be room temperature to calculate diffusion coefficients. The conductance…

Q: In an equimolar mixture of A and B, in which A is diffusing throgh stagnant B, a) Show that the, the…

A: The flux due to bulk diffusion is NA and that of molecular diffusion is JA and they are related as:…

Q: Consider diffusion of helium gas (He) across a block of pyrex of width L. At the bottom, He is…

A:

Q: into a large volume air stream flowing at an average speed of 1.5 m/s. The temperature is 65 °C and…

A: for the calculation of mass transfer co-efficient the correlations of the mass transfer are taken in…

Q: The concentrations of drug “A" at each end of a membrane are known to be C^(0) and Ca(ð), where ð is…

A: In membrane separation and mass transfer, A concentration gradient occurs when the concentration of…

Q: The glucose in cell culture media diffuses to the cell surface where it is rapidly consumed. The…

A: Given that  CA1  3.15 g/l  = 3.15 x 0.001 g/cm3 = 0.00315 g/cm3 radius = 30 um = 0.003  cm  DAB =…

Q: Suppose that on two different set-ups we have helium and bromine gas diffusing though stagnant air,…

A: Given: Two different gas helium and bromine is given and diffusing through stagnant air. Both at…

Q: With a porous membrane known to work in the Knudsen area; Knudsen diffusion a. H 2 / N 2 b. Ideal…

A: Knudsen diffusion takes place when the scale length of a system is smaller than the mean free path…

Q: A continuous distillation column is operating at steady state to purify alcohol from a mixture of…

A: Since we are entitled to answer up to 3 sub-parts, we will answer the first 3 as you have not…

Q: Let's see what the flux is through a membrane in steady state. Let's consider a 10 nm thick…

A:

Q: For a carburization process is carried out in gamma (ꝩ)-Fe at an unknown temperature. The diffusion…

A:

Q: An input stream contains oil sands, comprising 14.0% oil, the remainder being solid sand particles.…

A:

Q: Diffusion-convection problems wherein the species diffusivity is concentration-dependent often…

A:

Q: 14. The molar flux of component A in molecular diffusion is independent of

A: Introduction The molar flux is the number of moles per unit time per unit area,

Q: Predict the depth of the Si–P thin film after 1.5 h, if the target concentration is 5% of the…

A:

Q: Consider a homogeneous spherical bacterium with a radius of 10 cm. A substance A diffuses into the…

A:

Q: Select the case with the highest diffusion coefficient!   a. Diffusion of acetone in air at 0°, 1…

A:

Q: Consider a solid sphere, of radius R., which is placed in a large body of unstirred, aqueous…

A: