On Mon, 15 Oct 2007 21:17:22 -0600, "Bill" wrote
this crap:


"Bloody Horvath" wrote in message
.. .

Uh... hot air rises. How can water vapor be less dense than air?

You ****ing assholes have no idea of science.




I'm Horvath and I approve of this post.



http://en.wikipedia.org/wiki/Density_of_air

"The addition of water vapor to air (making the air humid) reduces the
density of the air, which may at first appear contrary to logic.
This occurs because the molecular mass of water (18) is less than the
molecular mass of air (around 29). For any gas, at a given temperature and
pressure, the number of molecules present is constant for a particular
volume. So when water molecules (vapor) are introduced to the air, the
number of air molecules must reduce by the same number in a given volume,
without the pressure or temperature increasing. Hence the mass per unit
volume of the gas (its density) decreases."


Good point. The water vapor changes the density of air. BUT... water
vapor is not denser than air.





I'm Horvath and I approve of this post.