A container has a volume of #3 L# and holds #2 mol# of gas. If the container is expanded such that its new volume is #12 L#, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?
P times V equals n times R times T
Since P (pressure) and T (temperature in Kelvin) will be the same:
and R is constant
In the second situation, you expand (volume) 4 times (
Now you need to inject