Question: Steam initially at 2 0 MPa, T = 6 7 8 C is expanded to saturated vapor at 0 . 4 MPa. Compute the change

Steam initially at 20MPa,T=678C is expanded to saturated vapor at 0.4 MPa. Compute the change in entropy (S,Jg-K).
Steam initially at 2 0 MPa, T = 6 7 8 C is

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