On what factor does the magnitude of surface tension depend?

The ratio of the partial pressure of a gaseous component to the total vapor pressure of the mixture is equal to .......

The rate of diffusion of a gas is proportional to

$300 \ mL$ of a gas '$x$' of molar mass $32 \ g \ mol^{-1}$ is effused in $25 \ s$. What volume of methane would effuse in the same time (in $mL$)?

The rate of diffusion of a gas is

$A$ $10 \ L$ vessel contains $1 \ mole$ of an ideal gas with pressure of $P \ atm$ and temperature of $T \ K$. The vessel is divided into two equal parts. The pressure (in $atm$) and temperature (in $K$) in each part is respectively: