A certain gas process ends in its original thermodynamics state. Of the following, which is possible as the net result of the process?
- The gas does no work but loses 50 joule of energy as heat
- The gas absorbs 50 J of energy as heat and does 50 J of work
- It is adiabatic and the gas does 50 J of work
- None of these
Explanation
Since ΔU = 0 for a cyclic process, Q = W.
The gas absorbs 50 J of energy as heat and does 50 J of work, where Q = W = 50 J.
The best answer is The gas absorbs 50 J of energy as heat and does 50 J of work.
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