Thursday, December 15, 2011

What is the average energy given to a single water molecule?

When perspiration on the human body absorbs heat, some of the perspiration turns into water vapor. The latent heat of vaporization at body temperature (37 oC) is 2.42 x 106 J/kg. The heat absorbed is approximately equal to the average energy given to a single water molecule (H2O) times the number of water molecules that are vaporized. What is the average energy given to a single water molecule?|||There are Avogadro molecules of water in 1 mole = 18 g.


Ave. energy/molecule = 0.018*2.42E6/Avogadro J.

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