Diffusion of oxygen in a laminar-flowing film of water.Estimate the rate of absorption of oxygen at 10 atm and 25oC into water flowing as a film down a vertical wall 1m high and 6 cm in width at a Reynolds number of 50 without surface ripplesDiffusivity of oxygen in water is 2.5x10-5 cm2/s and the mole fraction of oxygen in water at saturation is 2.3x 10-4.

Q: For steady state diffusion of a gas in a stagnant layer of another gas, the concentration decreases…

A: The way in decrease in concentration of the gas in stagnant layer is to be mentioned.

Q: Determine the Stokes settling velocity of these particles. Determine the settling velocity corrected…

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Q: A gas mixture containing nitrogen is refractory with an inner radius (R1) of 4 cm and an outer…

A: The diffusivity of Nitrogen gas = 2×10-4m2/s radius of the inner radius of the shell R1 = 4cm The…

Q: A dilute solution of solute A in solvent B is passed through a tubular-membrane separator, where the…

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Q: Consider a slice of suspension between heights z and z+dz, use Stokes-Einstein law to show that the…

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Q: A biodegradable polymer sphere with a radius of R erodes in water slowly and the erosion happens on…

A: Here, we have Diffusion coefficient D =2 * 10-6 cm2/s concentration of polymer in undissolved state…

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: The degree of mixing depends on a.particle size II. ...of the material. c. density |b. shape d. all…

A: We need to answer the above questions regarding the degree of mixing dependece and about the  types…

Q: An ion-exchange bed of 7 ft deep beads is to be backwashed with water to remove dirt from it. The…

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Q: Culture media containing the C. Vulgaris algal cells enters the tubular section of the…

A: Given that  Velocity of fluid = v= 200 cm/s =2 m/s diameter of the tube = d=6 cm =0.06 m density of…

Q: A piece of Al with a surface area of 2.5 m2 is anodized to produce a film of Al2O3 that is 23 mm…

A: Thickness=23*10-6m Surface area=2.5m2 Density=3.97g/cm3 To Calculate the amount of charge flow and…

Q: 1. A sheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted…

A: Thickness of sheet = 1.5 mm Diffusion coefficient of nitrogen in steel =  Diffusion flux =…

Q: A very large tank is made of FCC iron sheet. Hydrogen is stored inside the tank at 900 ° C. Due to…

A: Given Wall thickness ∆t=5 mm Area A= 5 m2 Time t=90 days Hydrogen concentration on inner…

Q: The effective use of a drug is achieved by its controlled release, and film-coated  pellets,…

A: Given: The effective use of a drug is achieved by its controlled release, and film-coated  pellets,…

Q: A spherical gel bead (d = 0.7 cm diameter) is loaded with the anti-nausea drug Dramamine to a…

A: The resistance of medium is inversely proportional to coefficient.The high coefficient will have low…

Q: 1. Heating of a Spherical Particle Consider a solid spherical particle of radius R and thermal…

A: First consider a sphere of radius R and the thermal diffusivity α Now to get governing equation for…

Q: Describe two diffusion motion of analyte in packed column. Then, illustrate the diagram of diffusion…

A: Two of the diffusion motions of an analyte in a packed column are: 1. Eddy Diffusion(multiple paths…

Q: When both solute and solvent are liquid, the diffusion coefficient has higher values ​​than in…

A: Given: When both solute and solvent are liquid, the diffusion coefficient has higher values ​​than…

Q: Corrugated surfaces such as those shown schematically in the figure below are commonly encountered…

A: Given that x=aL-zL the concentration of species =C the reaction is of the first order and takes…

Q: A membrane can separate gas mixture because different gases have different permeability through the…

A: The mixture of gases can be separated by separation membrane on the basis of different permeability…

Q: Given 35 grams of each substance at an initial temperature of 30°C. What is the final temperature of…

A: Given :        m=35 g        Ti=30°C       Tf=?       Q=4.28 KJ=4.28x103 Ja) For Lead      Q= mc…

Q: The unit cell of chromium contains two atoms. Without using the crystal structure infor- mation,…

A: (a) Given, The chromium contains two atoms in a unit cell. Let r be the radius of the atoms and a be…

Q: Molecular diffusion intensifies with decreasing temperature. (  ) Real (  ) False

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Q: A gas absorption tower of diameter 2 m contains ceramic Raschig rings randomly packed to a height m.…

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Q: A 4 mm diameter tube, 40 cm long, closed at one end and standing vertically on its closed end, is…

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Q: Linear Growth Regime B X =1 A Diffusion-limited Regime X = VB 1 Oxidation Time Figure 1 Comment the…

A: The diffusion of gas molecules (oxygen or water) through any oxide film is analyzed with the help of…

Q: consider diffusion of a drug across a two-layer membrane mounted in between two compartments (donor…

A: To calculate the flux of the drug from the donor to the receiver chamber, we can use Fick's first…

Q: PART 1: Write the half- reaction of each redox reaction and determine the oxidizing and reducing…

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Q: Pure hydrogen gas travels across a 7 mm thick vulcanised neoprene rubber slab at a pressure of…

A: Given data: Thickness of rubber slab = 7 mm Pressure of hydrogen gas= 202.65 kPa Temperature = 300 K…

Q: What is the driving force of the transfer of mass? a. Temperature gradient b. Velocity difference…

A: mass transfer is the transport of species from one point to another because of the difference…

Q: 6. Problem setups. Let's consider two cases of diffusion. On the left, we have cells embedded in a…

A: Given:Concentration of Oxygen

Q: Since a gas X diffuses 1.25 times faster than CO2(g), find the molecular weight of gas X and…

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Q: The diffusion of gas molecules A occurs at one end of the path is impermeable to gas molecules B…

A: In this question it is to be discussed about the measurement of partial pressure inside the tube…

Q: Describe, with the aid of diagrams, the concentration profiles for equimolar-diffusion and diffusion…

A: Diffusion through a stationary phase  Consider the diffusion in an Arnold diffusion cell. The narrow…

Q: It has been found that in modern designs of artificial kidneys (thin membranes and vigorous stirring…

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Q: Find the diffusion coefficient of the CO and N2 gas couple at 580 K and 4 atm conditions

A: Write the expression for the Diffusion coefficient as follows: DAB = 1.86×10-3T321MA+1MBPTσAB2Ω…

Q: Q2. Density and viscosity of a natural emulsion composed of 85% (by volume) water and 15% (by…

A: Given:  Emulsion contains 85% water and 15% oil. density of emulsion, ρemul=990 Kg/m3 density of…

Q: Consider the problem of how plants might lift water from ground level to their leaves. Assume that…

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Q: A linear hydrophilic polymer was added to a suspension of nano-size particles with 20 nm radius in…

A: The addition of a linear hydrophilic polymer to a suspension of nano-sized particles in water causes…