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A coffee cup calorimeter contains 480.0 grams of water at 25.00 C. To it are added: 380.0 grams of water at 53.5 C and 525.0 grams of water at 65.5 C. Assuming the heat absorbed by the styrofoam is neglibible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 C-1.

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