Medal Winners: Air Traffic Control Tapes

On 7 Feb 2006 10:08:43 -0800, wrote:


Roger wrote:
On 6 Feb 2006 11:40:13 -0800, wrote:


Roger wrote:
On Sun, 05 Feb 2006 17:50:04 GMT, Richard Lamb
wrote:

Might we go a bit farther?

The reason I ask is that I've seen people take big lungfuls of Helium,
which (obviously) doesn't produce the same effect.

A really big lung full can make you light headed in a hurry, but
beyond that?


Can someone explain why N is such a disaster but He doesn't?

"I think" it has to do with the partial pressure of He compared to N,
but I really don't know.

Partial Pressure of a gas is what the pressure would be if all the
other gasses were removed without changing the volume.

Equal volumes of gas at the same temperature and pressure have
equal numbers of molecules (Avogadro's law). So no, that isn't
the explanation.

I thought Avogadro's Law (number the same?) was a gram molecular
weight of any element will have the same number of molecules as the
gram molecular weight for any other element. As I recall it's
6 X 10^28


Perhaps he has more than one law named for him.

In essence, Avogadro's number is the conversion factor between
gram molecular weight of an and the number of molecules
in a sample of that element with a mass numerically equal in grams
to its gram molecular weight. Which, as stated in the law you quote,
is the same for all elements, or for that matter any substance which
consists of but a single molecule.

6.022 E23, as I recall.

Avogadro's law, Boyle's law and Charles' law may be combined to
produce the ideal gas law.

Back in college we had two chemistry books that had exponents on that
that differed by several digits.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com