Question

A 1.0 liter flask is filled with a mixture of two gases at 20. oC until a pressure of 14.43 atm is established. If 0.40 grams of the mixture is hydrogen, how many moles are there of the other gases?

Answer 1

pv=nRT solve for n, total moles, then subtract the moles of hydrogen present.

Answer 2

.20mol