If a gas expands at a constant temperature,then...

Given that the atomic weights of carbon,nitrogen,and oxygen are $12$,$14$,and $16$ respectively,which of the following pairs of gases will diffuse at the same rate?

For a fixed number of moles of a gas at constant volume,the pressure of the gas increases with an increase in temperature because:

Two flasks $A$ and $B$ of equal volume contain equal masses of $H_2$ and $CH_4$ gases at $100 \ K$ and $200 \ K$ temperature respectively. Which of the following relations is correct about the total kinetic energy $(E)$?

Which of the following relations is correct for an ideal gas?

Which of the following represents the total kinetic energy of $1 \ mole$ of a gas?