A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x 10-4 moles/cm3 at 35 ∘C. The diffusivity of CO2 in the polymer is known to be 2.29 x 10-8 cm2/s at this temperature. How long will it take for 0.001 moles of CO2 to leak from the container at steady-state? Assume that the amount of carbon dioxide in the surroundings is insignificant. Express your answer in hours.

20.3

wrong answer

a) 1.74

Thanx someguy

It was meant to be wrong. I don't like cheats. Maybe I'll tell MIT to see who put 20.3 in as an answer, so they'll know who cheated.

foolish guy

@Anonymous you will never stop people from cheating, so how about stop misleading people. A liar is worse than a cheat, by far. Stop lying.

b) 0.551

b= 8.8279*10^-20 in joules

It's 6264