Nitrogen at 100°C and 600 kPa expands in such a way that it can be approximated by a polytropic process with n = 1.2. The work if the final pressure is 100 kPa is nearest:
A) 128 kJ/kg
B) 143 kJ/kg
C) 171 kJ/kg
D) 194 kJ/kg
B) 143 kJ/kg
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