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1. |
What is the change in internal energy of 1 mole of air ((Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 5oC? |
A. | 84 kJ |
B. | 105 kJ |
C. | – 84 kJ |
D. | – 105 kJ |
Answer» E. | |