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**Unformatted text preview: **-= ∆ = T T x R C T nC Q V V In the above, the terms are given to nearest integer number of joules to reduce roundoff error. c) The net work done in the cycle is J. 131 J 274-J 405 = d) Heat is added in steps i and iv, and the added heat is J 1761 J 339 J 1422 = + and the efficiency is 7.5%. or , 075 . J 1761 J 131 = The efficiency of a Carnot-cycle engine operating between %. 44 44 . 1 is K 450 and K 250 450 250 = =-...

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- 7.5%, 44%, 250 K, 274 J, 339 J