Question

Suppose you cool some fixed amount of air under constant pressure. What will happen to its volume?

Answer 1

You can solve this question using Charles' Law, which essentially states:

\[{V_1 \over T_1}={V_2 \over T_2}\]
Pretend the left side represents your system before cooling, and the right side represents your system after cooling. This means T(2) will be very small. If T(2) went down, what needs to happen to V(2) in order to compensate and remain equal to the left side?

Answer 2

has to decrease! thanks