Calculate the heat change in calories for condensation of 14.0 g of steam at 100∘C.?
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Calculate the heat change in calories for condensation of 14.0 g of steam at 100∘C.
Express your answer as a positive value using three significant figures and include the appropriate units.
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heat of vaporization of water is 2256 kJ/kg
E = 0.014 kg x 2256 kJ/kg = 31.6 kJ
converting to the (obsolete) calories, that is 7550 cal
(540 cal/g)(14 g) = 7560 calories.