The diagram shows three isotherms for an ideal gas, with T3 ? T2 the same as T2 ? T1. It also shows five thermodynamic processes carried out on the gas. Rank the processes in order of the change in the internal energy of th gas, least to greatest.
A. I, II, III, IV, V
B. V, then I, III, and IV tied, then II
C. V, I, then III and IV tied, then II
D. IV, V, III, I, II
E. II, I, then III, IV, and V tied
Ans: B. V, then I, III, and IV tied, then II
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