(III) In the process of taking a gas from state a to state c along the curved path shown in Fig. 19–32, 85 J of heat leaves the system and 55 J of work is done on the system. (a) Determine the change in internal energy. Eint, a – Eint, c (b) When the gas is taken along the path cda, the work done by the gas is W = 38 J. How much heat Q is added to the gas in the process cda? (c) If Pa = 2.2Pd, how much work is done by the gas in the process abc? (d) What is Q for path abc? (e) If Eint, a – Eint, b = 15 J, what is Q for the process be? Here is a summary of what is given:
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