A container has a volume of #48 L# and holds #12 mol# of gas. If the container is compressed such that its new volume is #15 L#, how many moles of gas must be released to maintain a constant temperature and pressure?
The amount of gas that must be released is
This is an example of Avogadro's law, which states that when pressure and temperature are constant, the amount (moles) and volume of a gas are directly proportional, so that if moles increase, so does volume and vice versa.
Rearrange the equation to isolate
Determine how many moles must be removed from the container, subtract