The temperature of 2 moles of a gas is changed from `20^(@)C` to `30^(@)C` when heated at constant volume. If the molar heat capacity at constant volu
The temperature of 2 moles of a gas is changed from `20^(@)C` to `30^(@)C` when heated at constant volume. If the molar heat capacity at constant volume is 8 J `mol^(-1)K^(-1)`, the change in internal energy is
A. 80 J
B. 20 J
C. 160 J
D. 16 J
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