Kinetic energy per unit volume is $E$. The pressure exerted by the gas is given by

According to the Kinetic Molecular Theory, temperature is directly proportional to:

A container with insulating walls is divided into two equal parts by a partition fitted with a valve. One part is filled with an ideal gas at a pressure $p$ and temperature $T$, whereas the other part is completely evacuated. If the valve is suddenly opened, the pressure and temperature of the gas will be