Heat is added to 2.21 kg of ice at -14 °C. How many kilocalories are required...
Heat is added to 2.21 kg of ice at -14 °C. How many kilocalories are required to change the ice to steam at 144 °C?
Homework Answers
For the total heat needed
total heat needed = heat needed to increase to 0 degree C + heat needed to melt ice + heat needed to reach 100 degree C + heat needed to make steam + heat needed to raise to 144 degree C
total heat needed = 2.21 * (2100 * 14 + 334000 + 4186 * 100 + 2256 *1000 + 44 * 1996)
total heat needed = 6908071.04 J
total heat needed = 6908071.04/4186 kcal
total heat needed = 1650.3 kcal
the total heat needed to change the ice to steam is 1650.3 kcal
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