FRAC{{{T_2}}}{{{T_1}}} = {\left( {\frac{{{P_2}}}{{{P_1}}}} \right)^{\frac{{\gamma - 1}}{\gamma }}}\)\(\frac{{{T_2}}}{{{300}}} = {\left( {\frac{{{0.2}}}{{{0.1}}}} \right)^{\frac{{\gamma - 1}}{\gamma }}}\)T2 = 396.18 KAND, \(R = \frac{{8.314}}{{40}}\) = 0.207 kJ/kg-K\(W_c= \frac{{R{T_1} - R{T_2}}}{{\gamma - 1}}\) = \(\frac{{0.207\left( {300\; -\; 396.18} \right)}}{{1\; - 1.67}}\) = -29.7 kJ/kg