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A 46.5 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 348...

A 46.5 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 348 g of water, initially at 21.4°C. What is the final temperature of the water, if no heat is transferred to the Styrofoam or the surroundings?

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