Refrigerant-12 enters a compressor operating at steady state as saturated vapor at -7oC and exits at 1000

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Refrigerant-12 enters a compressor operating at steady state as saturated vapor at -7oC and exits at 1000 kPa. The compressor has an isentropic efficiency of 75%. Ignoring the heat transfer between the compressor and its surrounding as well as ke and pe, determine
(a) The exit temperature.
(b) Work input in kJ per kg of refrigerant flow.
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