A cylinder contains $0.03\; m^3$ of Argon gas at a temperature of $25^\circ C$ and a pressure of $1.2\; MPa$. Find the internal energy of the gas.

Question

$\begin{array}{1 1} 54\;kj \\ 108\;kj \\ 90\;kj \\ 180\;kj \end{array}$