Consider 4 grams of boiling water spread over a large surface so that 1 gram rapidly evaporates. Suppose further that the surface and surroundings are very cold so that all 540 calories for evaporation come from the remaining 3 grams of water. A.) How many calories are taken from eash gram of water that remains? B.) How many calories are released when 1 gram of 0 degrees celsius water changes to 0 degrees celsius ice?

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