What is the molar diffusive flux of O2 through the membrane?
A. A thin plastic membrane is used to separate helium from a gas stream. Under steady state conditions the concentration of helium in the membrane is known to be 0.02 and 0.005 kg mo /m3 at the inner and outer surfaces, respectively. If the membrane is 1 mm thick and the binary diffusion coefficient of helium with respect to the plastic is 10–9 m2/s, what is the mass flux by diffusion?
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Order Paper NowB. Oxygen gas is maintained at pressure of 2 bar and 1 bar on opposite sides of a rubber membrane that is 0.5 mm thick, and the entire system is at 25°C. What is the molar diffusive flux of O2 through the membrane? What are the molar concentrations of O2 on both sides of the membrane (outside the rubber)?
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