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Physical Chemistry
Vinod vm's Avatar
Vinod vm
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21 Apr 2009 12:59:54 IST
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calculate mole percent...
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A solution contains 10% of ethanol and 90% water what is the mole percent of ethanol in the solution.


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vignesh the cooler version of newton's Avatar

vignesh the cooler version of newton
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21 Apr 2009 14:00:52 IST
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 mol. wt of ethanol C2H5OH = 24 + 6+16 = 46 ..

no/- of moles in 10 g = 10/46  = 0.2174

no/-  moles of waer in 90 g water = 90/18 = 5

so, mole % = 0.2174*100 / (5 +0.2174)   = 4.17% ..

so,mole percent of ethanol is 4.17 %
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21 Apr 2009 15:44:42 IST
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yes it's correct 4.17%
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Amy Tran
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Joined: 1 Sep 2011
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1 Sep 2011 09:59:32 IST
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If 2.71mol of oxygen gas is mixed with 8.41mol of helium for a scuba breathing mixture. What is the mol% of each of the gases present?
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deepali G Mhatre
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6 Feb 2012 21:21:49 IST
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0.05 mole percent is eual to what????????
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deepali G Mhatre
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6 Feb 2012 21:25:18 IST
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calculate mole percent...
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shivansh shrivastava
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7 Feb 2012 11:48:45 IST
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10% and 90% by mass?
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