Subject:
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Re: Quick physics question
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Newsgroups:
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lugnet.off-topic.geek
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Date:
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Mon, 17 May 1999 21:24:14 GMT
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Viewed:
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129 times
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"Moz (Chris Moseley)" wrote:
> For gasses, PV = nRT - Pressure x Volume = nR x Temperature (where n =
> quantity of gas(es)), so you could work it out by assuming two steady states,
> one with the hydrogen/oxygen mix, the other after the explosion. The problem
> is that you have several things happening to create the condensing plasma,
> one of which is cooling (you're changing the "T" term above). So that
> equation doesn't really apply, except to tell us that cooling the plasma
> will tend to drop the pressure or volume of the gases. So yes, burning
> the H/O mixture will make it hotter, but cooling it will offset that.
Well PV = nRT only applies to an ideal gas - it just doesn't happen in
real life - there is another equation for a real gas which escapes me
right now.
R = 8.31 the gas constant.
> I guess it does tell you that your cooling will need to remove more energy
> than just the thermal energy of the plasma plus the state change energy,
> it will need to remove chemical energy of the burning too.
Dunno about that.
--
Carbon 60
ICQ # 5643170
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Message is in Reply To:
 | | Re: Quick physics question
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| (...) Eventually you will get a plasma, composed of neucleii and some electrons. At that point it's not really relevant to talk about compounds, what you have is basically soup. From memory you can't dissociate most simple molecules before they (...) (25 years ago, 16-May-99, to lugnet.off-topic.geek)
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