How much cream did you add

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Question: You pour 150 g hot coffee at 78.7°C and some cold cream at 7.50°C to a 115-g cup that is initially at a temperature of 22.0°C. The cup, coffee, and cream reach an equilibrium temperature of 56.0°C. The material of the cup has a specific heat of 0.2604 kcal/(kg°C) and the specific heat of both the coffee and cream is 1.00 kcal/(kg•C). If no heat is lost to the surroundings or gained from the surroundings, how much cream did you add?

I want you to explain the physics in this question.

Reference no: EM13688427

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