VCombustion products from a burner enter a gas turbine at $10$ bar and $950C$ and discharge at $1\mathrm{.}5$ bar. The turbine operates adiabatically with an efficiency of $77\%.$ Assuming the combustion products to be an ideal$-$gas mixture with a heat capacity of $32Jmo{l}^{-1}{K}^{-1},$ what is the work output of the turbine per mole of gas, and what is the temperature of the gases discharging from the turbine?