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1. |
A closed gaseous system undergoes a reversible constant pressure process at 2 bar in which 100 kJ of heat is rejected and the volume changes from 0.2 m3 to 0.1 m3. The change in the internal energy of the system |
A. | -100 kJ |
B. | -80 kJ |
C. | -60 kJ |
D. | -40 kJ |
Answer» C. -60 kJ | |