When a gas is heated at constant pressure from $20\,^oC$ to $40\,^oC$,its volume:

The rate of diffusion of a gas is inversely proportional to

In water saturated air,the mole fraction of water vapour is $0.02$. If the total pressure of the saturated air is $1.2 \; atm$,the partial pressure of dry air is .....$atm$.

At $STP$,it takes $1200 \ s$ for $0.48 \ g$ of $O_2$ to effuse through a pinhole. How many $mL$ of $CO_2$ gas will effuse under the same conditions and in the same time?

During the evaporation of a liquid:

$A$ gaseous mixture was prepared by taking equal moles of $CO$ and $N_2$. If the total pressure of the mixture was found to be $1 \ atm$,the partial pressure of the nitrogen $(N_2)$ in the mixture is $...$ $atm$.