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icse 2003 mole concept

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nausheen
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PostSubject: icse 2003 mole concept Wed Feb 27, 2008 11:13 am

10g of a mixture of anhydrous NaSO4 and NaCl is dissolved in water .To the solution is added excess of barium chloride
when 6.99 g of BaSO4 precipitates out as shown

NaSO4+BaCl = 2NaCl +BaSO4

calculate the % of  anhydrous NaSO4 in the mixture.
[Ba =137
S=32
0=16
Na=23]
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nausheen
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PostSubject: Re: icse 2003 mole concept Wed Feb 27, 2008 11:14 am

answer=42.6%
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