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.
10 answers
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
6 answers