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celphafiae4572
Joined: 08 Jan 2009
Posts: 4
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 Posted: Tue Aug 11, 2009 9:46 pm Post subject: |
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| I don't understand why in the explanation of the solution, the mole fraction of N2 is equated to the volume fraction of N2 ("Mole fraction of N2 = Volume occupied by N2/Total volume of gas"). |
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mcat_premed3832
Joined: 19 Oct 2006
Posts: 413
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| Posted: Tue Aug 11, 2009 11:13 pm Post subject: |
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| The whole calculation depends on Avogadro's law which essentially states that under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules. The problem actually tells you the molar volume is 24 liters (meaning 1 mole of the gas is the same as saying 24 liters of the gas). Thus mole fraction becomes the same as looking at the volume ratios. |
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celphafiae4572
Joined: 08 Jan 2009
Posts: 4
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| Posted: Wed Aug 12, 2009 11:29 pm Post subject: |
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| That's hot. Thanks. |
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dltkdgn896512
Joined: 26 Jun 2010
Posts: 36
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| Posted: Mon Aug 22, 2011 1:15 pm Post subject: |
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| celphafiae4572 wrote: | | That's hot. Thanks. |
lol |
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