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A rock is added to 22.7 g of oil. The initial temperature of the oil is 16.2 °C. The final temperature of the oil and the rock is 14.8 °C. q = m × C × ΔT; 1 kcal = 4.184 kJ. Did the rock gain or lose heat? What is the heat change of the rock? - None of these are correct - The rock gained heat; q(rock) = -13.60 cal - The rock lost heat; q(rock) = +13.60 cal - The rock lost heat; q(rock) = -13.60 cal - The rock gained heat; q(rock) = +13.60 cal
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