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5. Find the equilibrium temperature if 1 kg of water at 30◦C is mixed with 3...

5. Find the equilibrium temperature if 1 kg of water at 30◦C is mixed with 3 kg of ethyl alcohol at 0◦C. (cwater = 1.00 kcal/(kg · K); cethyl alcohol = 0.58 kcal/(kg · K).) (the answer is 10.9 C)

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