A mixture consists of 28% oxygen, 14% hydrogen, and 58% nitrogen by volume. A sample of this mixture has a pressure of 4.0 atm in a 9.6 L container at 300 K temperature. This mixture is run through a gas filter, which removes the hydrogen from this system. The gas is placed back into the 9.6 L container.
How many moles of gas are left in the container?
A) 4.2 mol
B) 2.6 mol
C) 1.3 mol
D) 3.9 mol
(This was the only question I got wrong when I did my test for the first time, so I know it is not D)
