Question: A closed steel bottle contains ammonia at 20C, x = 20% and the volume is 0.05 m3. It has a safety valve that opens at

A closed steel bottle contains ammonia at −20°C, x = 20% and the volume is 0.05 m3. It has a safety valve that opens at a pressure of 1.4 MPa. By accident, the bottle is heated until the safety valve opens. Find the temperature and heat transfer when the valve first opens.

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