The ratio between the root mean square velocity of $H_2$ at $50 \ K$ and that of $O_2$ at $800 \ K$ is

In which of the following pairs do the gaseous species diffuse with the same rate of diffusion under similar conditions of temperature and pressure?

If the $V_{rms}$ of a gas is $(30R)^{1/2}$ at $27\,^{\circ}C,$ then calculate the molar mass of the gas in $kg/mol$.

If the most probable speed of methane $(CH_4)$ at a certain temperature is $400 \ ms^{-1}$,what is the kinetic energy of one mole of methane at the same temperature in $J$?

The $rms$ speed at $NTP$ of the species can be calculated from the expression

Which of the following changes can be made in order to double the root mean square speed,$(V_{rms})$,of a gas kept in a rigid container?