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Re: [Phys-L] Figuring Physics solution Jan 2018

On 01/20/2018 08:59 PM, Jeffrey Schnick wrote:

(I think the explanation given in the Physics Teacher is conceptually correct.)

It's not correct, conceptually or otherwise.

As Robert Cohen pointed out at the beginning of this thread,
when the molecule leaves the liquid, it loses its binding
energy (van der Waals or whatever). If it loses energy
but there is no cooling, what happens to conservation of
energy??????

Also, if the explanation were correct it would apply
equally to evaporation (sublimation) from a solid.
It's even more obviously wrong in that case.