What is the average kinetic energy per molecule of an ideal gas in $SI$ units at $25 \, ^\circ C$?

With an increase of pressure,the mean free path

Which of the following expressions correctly represents the relationship between the average molar kinetic energy,$\overline{K.E.}$,of $CO$ and $N_2$ molecules at the same temperature?

According to the kinetic molecular theory of gases, which of the following statements are correct?
$a$) The actual volume of the molecules is negligible in comparison to the empty space between them.
$b$) Collisions of gas molecules are inelastic.
$c$) At any particular time, different particles in the gas have the same speed and same kinetic energies.
$d$) Pressure is exerted by the gas as a result of the collision of the particles with the walls of the container.

The kinetic energy in $J$ of $1$ mole of $N_2$ at $27^{\circ} C$ is: $\left( R = 8.314 \ J \ mol^{-1} \ K^{-1} \right)$

The internal energy of one mole of an ideal gas is ............ .