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Statement of a problem № 2715

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A 200-g copper calorimeter can contains 150 g of oil at 20 °C. To the oil is added 80 g of aluminum at 300 °C. What will be the temperature of the system after equilibrium is established? cCu = 0.093 cal/g·°C, cAl = 0.21 cal/g·°C, coil = 0.37 cal/g·°C.

Solution:
A 200-g copper calorimeter can contains 150 g of oil at 20 °C. To the oil is ad

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