According to the Combined Gas Law, the volume of a gas varies inversely as the pressure and directly as the temperature. When a certain gas occupies a volume of
2.4L at 25°C, the pressure of the gas is 720 mmHg?

a.
Define variables and write a combined variation equation
to represent the situation.

b. CALCULATE PRECISELY Suppose the volume of the gas is reduced to a volume of
2 L and the temperature is increased to 28°C. What is the pressure of the gas?
Show your work.