Pressure of an ideal gas at constant volume is proportional to

$A$ gas has volume $V$ and pressure $P$. The total translational kinetic energy of all the molecules of the gas is :-

If the $rms$ velocity of a gas in a container is doubled,the pressure will .........

The number of gas molecules striking per second per square metre of the top surface of a table placed in a room at $20^{\circ} C$ and $1$ atmospheric pressure is of the order of (given $k_{B} = 1.4 \times 10^{-23} \, J K^{-1}$ and the average mass of an air molecule is $m = 5 \times 10^{-27} \, kg$).

The pressure of an ideal gas is related to energy by the equation $E = \frac{3}{2} PV$. Here,$E$ stands for:

The translatory kinetic energy of a gas per $gm$ is