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a) A(n) 85-g ice cube at 0°C is placed in 920 g of water at 20°C....

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Physics

a) A(n) 85-g ice cube at 0°C is placed in 920 g of water at20°C. What is the final temperature of the mixture?

b) A 103-g cube of ice at 0°C is dropped into 1.0 kg of waterthat was originally at 87°C. What is the final temperature of thewater after the ice has melted?

c) An aluminum cup contains 225 g of water and a 40-g copperstirrer, all at 27°C. A 432-g sample of silver at an initialtemperature of 89°C is placed in the water. The stirrer is used tostir the mixture gently until it reaches its final equilibriumtemperature of 32°C. Calculate the mass of the aluminum cup.

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