An ideal-gas mixture consists of 30 percent helium and 70 percent argon gases by mass. The mixture...

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An ideal-gas mixture consists of 30 percent helium and 70 percent argon gases by mass. The mixture is now expanded isentropically in a turbine from 400°C and 1.2 MPa to a pressure of 200 kPa. The mixture temperature at turbine exit is
(a) 195°C (b) 56°C (c) 112°C
(d) 130°C (e) 400°C

David · Accepted Answer

Q) An ideal-gas mixture consists of 30 percent helium and 70 percent argon gases by mass. 
The mixture is now expanded isentropically in a turbine from 400°C and 1.2 MPa to a 
pressure of 200 kPa. The mixture temperature at turbine exit is 
(a) 195°C (b) 56°C (c) 112°C 
(d) 130°C (e) 400°C 
Sol:

An ideal-gas mixture consists of 30 percent helium and 70 percent argon gases by mass. The mixture is now expanded isentropically in a turbine from 400°C and 1.2 MPa to a pressure of 200 kPa. The...

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