At constant temperature,a gas is at a pressure of $940.3 \, mm \, Hg$. The pressure at which its volume decreases by $40 \%$ is $......... \, mm \, Hg$. (Nearest Integer)

The density of ammonia gas at $27^{\circ}C$ and $3 \, atm$ pressure is approximately:

What is the ideal gas equation? Derive the equation for an ideal gas and describe the characteristics of $R$ and its value.

$2 \ g$ of $O_2$ at $27 \ ^\circ C$ and $760 \ mm$ of $Hg$ pressure has volume ............. $L$.

$A$ car tyre is filled with nitrogen gas at $35 \ \psi$ at $27^{\circ} C$. It will burst if pressure exceeds $40 \ \psi$. The temperature in $^{\circ} C$ at which the car tyre will burst is ............ (Rounded-off to the nearest integer)

Four vessels of same volume consist of equal moles of four gases $H_2$,$Cl_2$,$N_2$,and $O_2$ separately at the same temperature. The pressure exerted by the gas is maximum for -