At constant pressure,the root mean square velocity of an ideal gas is proportional to the density $(d)$ as:

$A$ gaseous mixture of $2$ moles of $A$,$3$ moles of $B$,$5$ moles of $C$,and $10$ moles of $D$ is contained in a vessel. Assuming that gases are ideal and the partial pressure of $C$ is $1.5 \ atm$,what is the total pressure (in $atm$)?

Cooking is fast in a pressure cooker,because

The rate of diffusion of $SO_2$,$CO_2$,$PCl_3$ and $SO_3$ are in the following order:

The ratio of $\frac{C_p}{C_v}$ for inert gases is

$A$ sample of $N_2$ gas at $0.8 \, atm$ pressure takes $38 \, s$ to effuse through a pinhole. $A$ sample of $1 \, mol$ of an unknown gas '$X$' at $1.6 \, atm$ pressure takes $57 \, s$ to effuse through the same pinhole. The molar mass of gas '$X$' in $g/mol$ is .............