Question

A container has a volume of `72 L` and holds `6 mol` of gas. If the container is compressed such that its new volume is `36 L`, how many moles of gas must be released to maintain a constant temperature and pressure?

Answer 1

`3 "mol"`

Explanation:

We imagine the molecules of the `6 "mol"` of gas to be evenly distributed within the `72 "L"` container.

Now, we put a partition at the center of the container to divide the container into 2 - `36 "L"` containers.

Each `36 "L"` container will take half the original amount of gas. (There is no reason why one side should have more than the other) So that would be `6 "mol" xx 1/2 = 3 "mol"`.