(Answered) A 500 g silver spoon at 200nbspoc is placed in a cup of

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A 50.0 g silver spoon at 20.0 ^oC is placed in a cup of coffee at 90.0 ^oC. The spoon heats while the coffee cools. The final temperature of the spoon and the coffee is 89.2 ^oC. The coffee cools while the spoon heats. Assuming the specific heat of coffee to be the same as the specific heat of water (4.19 J/g^.oC) and knowing the specific heat of silver to be 0.235 J/g^.oC, what is the mass of the coffee?

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