Homework Help: Physics

Posted by Anon on Wednesday, November 28, 2012 at 1:32am.

Which requires more energy: to raise 1 kg of liquid water from 0 to 100 degrees (Celsius) or to turn that water to steam after it hits 100 degrees? Assume the specific heat capacity of water is approximately independent of temperature.

Physics - drwls, Wednesday, November 28, 2012 at 4:34am
Heating of the liquid from 0 to 100 C requires 100 cal/g. Evaporation requires 540 cal/g, more than five times as much heat.

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