An ideal-gas mixture consists of 60 percent helium and 40
Chapter 13, Problem 107P(choose chapter or problem)
Problem 107P
An ideal-gas mixture consists of 60 percent helium and 40 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) 56°C
(b) 195°C
(c) 130°C
(d) 112°C
(e) 400°C
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