Re: Culling by suffocation

Thus spake Oz <Oz@xxxxxxxxxxxxxxxxxxxx>
Oh No <notI@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> writes

The Argon CO2 mix will diffuse of its own accord.

Ar atomic weight 40
CO2 molecular weight 44

Air about 28

Its certainly very easy to have a stable layer of CO2 sitting below the
air layer. I don't know how fast it would diffuse but Br2 (Mol wt 160)
is easy to see and produces a very marked layer (and that's warm Br2).

A stable state has
all
the gases mixed evenly.

This is not so in a gravitational field. This is why He balloons go up.

Actually it is so in a gravitational field. Otherwise the air itself
would
separate out into component gases. He balloons work because, ,
the balloon is a membrane which, strangely, prevents mixing of the He
with the surrounding air. In the absence of a membrane each atom of He
takes a random walk around the available space, just does each molecule

of air. These random walks lead ultimately to an even distribution of
the gases. Note: an introduced gas like He/Ar/C02 is only heavier or
lighter because it is a concentration of the same molecule/atom. As it
diffuses the gas becomes a mixture and is no longer heavier or lighter.

If it were introduced in concentration at floor

level it might hang around for a while, before it diffuses. Oz may have

a better idea than I of exactly how long, but I don't think it takes
very long tens of minutes I think, not hours.

Judging from fermentation vats I would suggest hours.

Maybe. But not long ago you also mentioned some remarkably short time
for an H2 molecule to leave the atmosphere, based on the fact that
collisions with other molecules are actually quite rare. If that is
right, then it must take a very short time for individual molecules to
reach the ceiling or the other side of the room. I am not sure
fermentation vats are a good example, as they are producing more CO2 to

replace that which

One would imagine in
practice they would release a jet of the stuff under pressure fairly
high up. It will mix pretty well immediately.

It would be much better to introduce it at low level. At reasonable
volume.

Why? I suspect you are just arguing for the sake of it. How unlike you.

It is better to introduce a reasonable volume to displace as much air
as
possible, but unless it is actually required to displace the air in a
systematic manner, I can't see that this makes much difference.
actually.

However please note that CO2 is NOT non-toxic and IS acidic.

when mixed with H20, I guess.

Its rather unpleasant to inhale it at high concentration.

ok. Maybe that is why an Ar mix is advised.

Pure Ar would probably result in some hyperventilation before anoxia
cuts in due to the zero level of CO2.

Personally, as I said on the earlier thread, I would prefer CO as a
humane pesticide. It reliably does for suicides all over the world after
all, so cannot be that unpleasant (even when mixed with exhaust fumes).


I believe that CO2 does less environmental damage, is probably a lot
cheaper, and I suspect that pure suffocation by displacing O2 is
probably just as quick and more humane. A larger volume of CO2/Ar may
be
required, but I doubt whether that is a significant fact.


Regards

--
Charles Francis
substitute charles for NotI to email

.

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