A container has a volume of #18 L# and holds #6 mol# of gas. If the container is compressed such that its new volume is #3 L#, how many moles of gas must be released to maintain a constant temperature and pressure?
At constant temperature and pressure, we can use Avogadro's law, which states that
So, we need to find the new number of moles, and we can rearrange the equation into,
Now, we can substitute into the given values, and we get
So, the new amount of moles will be
In order to find the difference,
So, five moles of the gas must be released.