If $N_2, O_2, H_2$,and $He$ gases are filled separately in four car tubes at the same pressure,which gas will diffuse first?

In a closed vessel at $25 \, ^oC$ temperature,$4 \, mole$ $O_2$,$3 \, mole$ $Cl_2$,and $3 \, mole$ $N_2$ are mixed,and the total pressure is found to be $50 \, bar$. Find the partial pressure of each gas.

On what factors does the vapor pressure of a liquid depend?

The ratio of rates of diffusion of oxygen and an unknown gas is $1:4$. The unknown gas is

The ratio of rates of diffusion of gases $X$ and $Y$ of molecular weights $36$ and $64$ is

Write the formula to calculate the pressure of a dry gas collected over water.