At $3 \text{ atm}$ pressure,the weight of $14.8 \text{ L}$ of a gas is $15 \text{ g}$. What is the average speed of the gas molecules?

If the mass of a gas at $3 \, atm$ pressure and $14.8 \, L$ volume is $15 \, g$,calculate the root mean square speed $(u_{rms})$ of the gas molecules. (Assume $T = 300 \, K$)

$RMS$ velocity of one mole of an ideal gas was measured at different temperatures. $A$ graph of $(u_{rms})^2$ (on y-axis) and $T(K)$ (on x-axis) gave a straight line passing through the origin and its slope is $249 \ m^2 \ s^{-2} \ K^{-1}$. What is the molar mass (in $kg \ mol^{-1}$) of the ideal gas? $(R=8.3 \ J \ mol^{-1} \ K^{-1})$

The rms velocity $u_{rms}$,mean velocity $u_{av}$ and most probable velocity $u_{mp}$ of a gas differ from each other at a given temperature. Which of the following ratios regarding them is correct?

The root mean square velocity of a gas molecule is proportional to:

Among the following gases,which one has the lowest root mean square velocity at $25 \ ^oC$?