What is the kinetic energy of $1$ mole of a monoatomic gas at $0 \, ^\circ C$? $(R = 8.31 \, J/mol \cdot K)$

$A$ container has $N$ molecules at absolute temperature $T$. If the number of molecules is doubled but the total kinetic energy in the box remains the same as before,the absolute temperature of the gas is ...........

Which one of the graphs below best illustrates the relationship between internal energy $U$ of an ideal gas and temperature $T$ of the gas in $K$?

The parameter that remains the same for molecules of all gases at a given temperature is:

The internal energy of air in a $4 \ m \times 4 \ m \times 3 \ m$ sized room at $1$ atmospheric pressure will be . . . . . . $\times 10^6 \ J$. (Consider air as a diatomic molecule)

On the basis of the kinetic theory of gases,the gas exerts pressure because its molecules: