A bag containing  ice is much more effective in absorbing energy than one containing the same amount of  water.

(a) How much heat transfer is necessary to raise the temperature of 0.800 kg of water from  to?

(b) How much heat transfer is required to first melt 0.800 kg of  ice and then raise its temperature?

(c) Explain how your answer supports the contention that the ice is more effective.

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