Air in a cylinder expands so that the temperature (i.e., Pv) remains constant. If the pressure changes from 200 kPa to 1200 kPa, with an initial temperature of 20ºC, the work is nearest:
A) ?140 kJ/kg
B) ?150 kJ/kg
C) ?160 kJ/kg
D) ?170 kJ/kg
B) ?150 kJ/kg
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