Water standing in the open at 32.0oC evaporates because of the escape of some of the surface
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Water standing in the open at 32.0oC evaporates because of the escape of some of the surface molecules. The heat of vaporization (539cal/g) is approximately equal to en, where e is the average energy of the escaping molecules and n is the number of molecules per gram.
(a) Find ε.
(b) What is the ratio of ε to the average kinetic energy of H2O molecules, assuming the latter is related to temperature in the same way as it is for gases?
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a We use LWN where Ly is the heat of vaporization and W ...View the full answer
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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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