A container has a volume of #14 L# and holds #9 mol# of gas. If the container is compressed such that its new volume is #4 L#, how many moles of gas must be released from the container to maintain a constant temperature and pressure?
Rewriting, we can say
According to your problem, the right side is constant, since the temperature and pressure - both remain constant during the entire process. This means that
The number of moles that have escaped is given by