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A Constant Pressure Calorimeter Has Metal Parts (Heat Capacity of 850.0

Question 168

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A constant pressure calorimeter has metal parts (heat capacity of 850.0 J °C−1)and 1020 grams of oil (specific heat = 2.248 J g−1 °C−1), both at 24.50 °C. Two metal slugs, one a 460.0 g piece of cobalt and the other a 360.0 g piece of cadmium were removed from an oven that was maintained at 240.0 °C and added to the calorimeter. If no heat was lost to the surroundings, what would be the final temperature in the calorimeter? (cadmium, molar heat capacity = 25.34 J mol−1 °C−1; cobalt, molar heat capacity = 25.12 J mol−1 °C−1)Hint: Remember to use moles as an intermediary and pay careful attention to units throughout the problem.

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