Question

You place a balloon in a closed vacuum chamber at standard temperature and pressure (STP). You decrease the chamber temperature by half but keep the pressure constant. What happens to the balloon?

It doubles in volume.

It stays the same volume.

It expands to four times the original volume.

It reduces in size by half


If you do know the answer could you also explain it to me, please? I've gotten this on two quizzes and I pay attention to my lessons but I always get this one wrong.

Answer 1

It doubles in volume.

Step-by-step explanation:

This answer should be true

Answer 2

It reduces in size by half.

This is due to Charles's law, which states that the absolute temperature and volume of a gas are directly proportional, given that pressure is kept constant. Therefore, if the absolute temperature is halved, the volume of the gas will also halve.