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A Styrofoam cup holding 100 g of hot water at 84°C cools to room temperature, 21.0°C....

A Styrofoam cup holding 100 g of hot water at 84°C cools to room temperature, 21.0°C. What is the change in entropy of the room? Neglect the specific heat of the cup and any change in temperature of the room.
J/K

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