psi20 Posted November 10, 2004 Share Posted November 10, 2004 Is methane gas lighter than oxygen? Link to comment Share on other sites More sharing options...
psi20 Posted November 10, 2004 Author Share Posted November 10, 2004 and carbon dioxide too? Link to comment Share on other sites More sharing options...
budullewraagh Posted November 10, 2004 Share Posted November 10, 2004 define "lighter" Link to comment Share on other sites More sharing options...
psi20 Posted November 10, 2004 Author Share Posted November 10, 2004 Lighter as in if concealed in a box, which would float on top of the other. Maybe the term would be lowest density. Link to comment Share on other sites More sharing options...
jsatan Posted November 10, 2004 Share Posted November 10, 2004 lol. lower density at a simple quess Link to comment Share on other sites More sharing options...
psi20 Posted November 10, 2004 Author Share Posted November 10, 2004 Just curious, but what other kinds of "lighter" are there? Link to comment Share on other sites More sharing options...
Tetrahedrite Posted November 10, 2004 Share Posted November 10, 2004 In terms of Avagadro's law, yes methane is lighter than O2 and CO2 Link to comment Share on other sites More sharing options...
budullewraagh Posted November 10, 2004 Share Posted November 10, 2004 at the same time, you have to consider the ideal gas law... Link to comment Share on other sites More sharing options...
MolecularMan14 Posted November 10, 2004 Share Posted November 10, 2004 Just curious, but what other kinds of "lighter" are there? lol brighter, an igniter, less weighty Link to comment Share on other sites More sharing options...
jdurg Posted November 10, 2004 Share Posted November 10, 2004 Generally speaking, gasses with a low molecular weight will be less dense than gasses with a higher molecular weight. That is why hydrogen gas is the least dense gas in existance, and why sulfur hexafluoride is basically the densest. Link to comment Share on other sites More sharing options...
Gilded Posted November 10, 2004 Share Posted November 10, 2004 Wha? Sulfur hexafluoride? Never heard of it, sounds rather dense though. Link to comment Share on other sites More sharing options...
jsatan Posted November 10, 2004 Share Posted November 10, 2004 Anyone else get the feeling that this has gone way off a very simple question? It was obvious what he was trying to say. Link to comment Share on other sites More sharing options...
Gilded Posted November 10, 2004 Share Posted November 10, 2004 Well, it wasn't too clear if he meant the O2 weight vs. CH4 weight or something else. Link to comment Share on other sites More sharing options...
jsatan Posted November 10, 2004 Share Posted November 10, 2004 lol. if some one is asking if the gas is lighter than another gas then I dont think they would be thinking about the atomic weight. Link to comment Share on other sites More sharing options...
Gilded Posted November 10, 2004 Share Posted November 10, 2004 "lol. if some one is asking if the gas is lighter than another gas then I dont think they would be thinking about the atomic weight." Well... who knows. Link to comment Share on other sites More sharing options...
jdurg Posted November 10, 2004 Share Posted November 10, 2004 Wha? Sulfur hexafluoride? Never heard of it, sounds rather dense though. Sulfur Hexafluoride is a VERY inert and VERY dense gas. It's used in the electronics industry to provide an inert atmosphere that will be so much denser than the other gasses that it really doesn't allow any contamination. If you inhale a little bit of it, your voice will become VERY deep, and the only way to get it out of your lungs is to basically turn upside down and cough it out. It's pretty neat stuff. Link to comment Share on other sites More sharing options...
Gilded Posted November 10, 2004 Share Posted November 10, 2004 Whoah, sounds rather interesting. But I don't think that I voluntarily want to breathe sulfur containing gases. Or is it so inert that it doesn't cause any problems like for example your lungs breaking into a bloody pulp? Link to comment Share on other sites More sharing options...
YT2095 Posted November 10, 2004 Share Posted November 10, 2004 it`s quite inert and don`t worry about the Fluorine component either, Halokanes are used regularly as anaesthetics (inhaled) certain halogen compounds can be used a temp blood substitutes also (in combo with others). they`re medical lifesavers really! Link to comment Share on other sites More sharing options...
jsatan Posted November 10, 2004 Share Posted November 10, 2004 I want some, try and get a mix of helium and that stuff to sound normal, lol. Link to comment Share on other sites More sharing options...
ed84c Posted November 10, 2004 Share Posted November 10, 2004 got any density figures for this sulphur hexaflouride Link to comment Share on other sites More sharing options...
jdurg Posted November 10, 2004 Share Posted November 10, 2004 SF6 has a density of about 6.164 g/L, so that is INCREDIBLY dense for a gas. It is fully non-toxic, but it can still be lethal. Since it's so much denser than air, if you inhale too much it can quickly asphyxiate you. Plus, since it's so dense it's hard to expel from your lungs. (At about 500 degrees celcius, it will also decompose into fluorine gas and sulfur.) Link to comment Share on other sites More sharing options...
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