The water having more dissolved $O_{2}$ is:

The ratio of the rate of diffusion of $SO_2$ and $O_2$ is .......

Which of the following statements is correct?

The ratio of rates of diffusion of $SO_2$,$O_2$ and $CH_4$ is

$A$ vessel of volume $V \ L$ contains an ideal gas at $T \ K$. The vessel is partitioned into two equal parts. The volume (in $L$) and temperature (in $K$) in each part is respectively

$A$ sample of air contains $N_2$ and $O_2$ saturated with water vapor,with a total pressure of $640 \ torr$. If the water vapor pressure is $40 \ torr$ and the molar ratio of $N_2$ to $O_2$ is $3 : 1$,what is the partial pressure of $N_2$ in the sample in $torr$?