Solve the below problem:
Q: An ideal-gas mixture of helium and argon gases with identical mass fractions enters a turbine at 1200 K and 1 MPa at a rate of 0.3 kg/s, and expands isentropically to 100 kPa. The power output of the turbine is. You should solve the problem in a step by step. You must include all the units which are needed to solve the given problem