P1V1 = P2V2
Let's use Boyle's Law to calculate the volume of a gas whose initial value is 20 L a 1.0 atm pressure which is compressed to a pressure of 2.0 atm.
P1 = 1.0 atm
V1 = 20 L
P2 = 2.0 atm
Will V2 be larger or smaller than V1?
Larger Smaller Same