Question

A container has a volume of `21 L` and holds `15 mol` of gas. If the container is compressed such that its new volume is `7 L`, how many moles of gas must be released from the container to maintain a constant temperature and pressure?

Answer 1

`10mol`

Explanation:

Pressure(`P`),Volume(`V`),Number of `mol`(`n`),Gas constant(`R=0.082`), Kelvin temperature(`T`)
`PV=nRT`
`P*21=15RT->P*7=nRT->n=5`
So `15-5=10` is the amount that needs to be released to maintain a constant temperature and pressure