rogue Posted April 10, 2004 Share Posted April 10, 2004 I'm having problems with questions like this... I'm sure how to go about solving it... an explaination to the working out would help. thanks Calculate the volume of gas occupied by 3.6426 g of nitrogen at 45.00oC and 101.3 kPa given that value of the gas constant, R, is 8.314 J/K.mol. Link to comment Share on other sites More sharing options...
swansont Posted April 10, 2004 Share Posted April 10, 2004 I'm having problems with questions like this... I'm sure how to go about solving it... an explaination to the working out would help. thanks Calculate the volume of gas occupied by 3.6426 g of nitrogen at 45.00oC and 101.3 kPa given that value of the gas constant' date=' R, is 8.314 J/K.mol.[/quote'] PV=nRT, and a mole of an ideal gas occupies 22.4L at STP 1 Link to comment Share on other sites More sharing options...
YT2095 Posted April 10, 2004 Share Posted April 10, 2004 short and sweet! just out of curiosity though, what would be closest to an "ideal gas" that we know of? Link to comment Share on other sites More sharing options...
rogue Posted April 10, 2004 Author Share Posted April 10, 2004 thanks for the help - its probably argon Link to comment Share on other sites More sharing options...
aommaster Posted April 10, 2004 Share Posted April 10, 2004 what would be closest to an "ideal gas" ? what do u exactly mean by, 'an ideal gas'? Link to comment Share on other sites More sharing options...
YT2095 Posted April 10, 2004 Share Posted April 10, 2004 what do u exactly mean by, 'an ideal gas'? my question exactly Link to comment Share on other sites More sharing options...
Dave Posted April 10, 2004 Share Posted April 10, 2004 An ideal gas is one where it basically makes things easy to calculate. I can't remember the specifics offhand, but things like all collisions between molecules are elastic, things like that. Link to comment Share on other sites More sharing options...
YT2095 Posted April 10, 2004 Share Posted April 10, 2004 the only thing I remember with ref to an "ideal gas" was that it should disappear at absolute zero, I`m don`t know if they meant have zero volume or what though, it was over 25 years ago! ) Link to comment Share on other sites More sharing options...
Dave Posted April 10, 2004 Share Posted April 10, 2004 http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/idegas.html An ideal gas has no intermolecular forces or inelastic collisions. Real gases only behave like ideal gases when they get to lower temperatures. 1 Link to comment Share on other sites More sharing options...
wolfson Posted April 10, 2004 Share Posted April 10, 2004 R, is 8.314 J/K.mol. grrrr and 101.3 kPa grrrr. atm and 0.0821 J/K.mol-1, btw how old is your teacher. V = P / nRT V= volume n= number of moles R = Gas constant (0.0821) or in your case 8.314 J.K.mol-1 T= Tempertaure (K) Oh and as for Ideal gas, N at really low K has a volume of 22.362 L. 1 Link to comment Share on other sites More sharing options...
swansont Posted April 10, 2004 Share Posted April 10, 2004 - its probably argon I think any of the noble gases will act like ideal gases, since they don't form molecules. Others will too, to varying degrees. 1 Link to comment Share on other sites More sharing options...
rogue Posted April 11, 2004 Author Share Posted April 11, 2004 R, is 8.314 J/K.mol. grrrr and 101.3 kPa grrrr. atm and 0.0821 J/K.mol-1, btw how old is your teacher. he's about 65 I'm guessing... you could probably guess he's very old fashioned in his teaching methods thanks for the help! Link to comment Share on other sites More sharing options...
wolfson Posted April 11, 2004 Share Posted April 11, 2004 Yes i could tell, by using KPa as pressure and 8.314 as the gas constant, your welcome anytime. Link to comment Share on other sites More sharing options...
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