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Question
A bag containing $0^\circ\textrm{C}$ ice is much more effective in absorbing energy than one containing the same amount of $0^\circ\textrm{C}$ water. a. How much heat transfer is necessary to raise the temperature of 0.800 kg of water from $0^\circ\textrm{C}$ to $30.0^\circ\textrm{C}$? b. How much heat transfer is required to first melt 0.800 kg of $0^\circ\textrm{C}$ ice and then raise its temperature? c. Explain how your answer supports the contention that the ice is more effective.
1. $1.00\times 10^{5}\textrm{ J}$
2. $3.68\times 10^{5}\textrm{ J}$
3. Melting the ice before increasing the temperature of the water increased the heat absorbed by a factor of 3.7. Starting with ice is much more effective at absorbing heat.
Solution Video