Most of the real gases behave like an ideal gas at

A real gas behaves like an ideal gas if its

The $rms$ speed of air molecules in a vessel is $90 \times {10^2}\ m/s$ . If half of the gas leaks out at constant temperature, the $rms$ speed of the remaining air molecules will be

The root mean-square speed $(rms)$ of oxygen molecules $(O_2)$ at a certain absolute temperature is $\upsilon $ . If the temperature is doubled and the oxygen gas dissociates into atomic oxygen, the $rms$ speed would be

$N_1$ molecules of a gas at temperature $T_1$ are mixed with $N_2$ molecules at temperature $T_2$. The resulting temperature of the mixture gas is

In a thermally isolated system, two boxes filled with an ideal gas are connected by a valve. When the valve is in closed position, states of the box $1$ and $2$ respectively, are ( $1 \,atm , V, T)$ and $(0.5 \,atm , 4 V, T)$. When the valve is opened, then the final pressure of the system is approximately ............... $atm$