A gas cylinder of $5L$ capacity containing $4\; kg$ of He gas at $27^{\circ}C$ developed leakage leading to the escape of the gas into atmosphere. If atmospheric pressure is $1 \;atm$, calculate the work done by the gas assuming ideal behavior.

Question

$\begin {array} {1 1} (A)\; 2.494 \times 10^3\: kJ & \quad (B)\;-24.94 \times 10^5\: kJ \\ (C)\; -24.94 \times 10^3\: kJ & \quad (D)\;-2.494 \times 10^3\: kJ \end {array}$