# A container has a volume of #21 L# and holds #14 mol# of gas. If the container is compressed such that its new volume is #7 L#, how many moles of gas must be released from the container to maintain a constant temperature and pressure?

##### 1 Answer

Dec 31, 2016

9.33 moles

#### Explanation:

Assuming ideal gas behavior where n = PV/RT , with a constant temperature and pressure, the ratio of the volume change in L is the same as the ratio of the change in the total number of moles of gas in the container.

SO, to retain 4.67 moles from the original 14, 9.33 moles of gas must be released.