Answer to Question #56380 in General Chemistry for Eric Mathew

Question #56380
Given that you know one gas in a mixture of gases has a pressure of .5 atm, and has a mol fraction of .18, what volume will the mixture of gases occupy if the temperature is 390 kelvin, the total number of moles of all the gases combined are 20?
Expert's answer
pV = vRT
V = vRT/p
R = 0.082 L atm/K mol

V = 20 * 0.082 * 390 / 0.5 = 1279.2 L

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