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In which situations does the internal energy of enclosed gas system increase? a. The heat gained...

In which situations does the internal energy of enclosed gas system increase?

a. The heat gained by the system is less than the work done by the system on the surroundings when the system expands

b. The heat gained by the system is more than the work done by the system on the surroundings when the system expands

c. The work done on the system when it is compressed is more than the heat lost by the system to the surroundings.

d. b and c                   e. a and c

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