Chemistry

If a chemist analyzes a 3.84g sample containing sand and table sugar, and recovers 1.43g of      sand, what  percent by mass of table sugar should the chemist report for this sample.


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shaun1

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3.84 - 1.43 = 2.41 2.41g of table sugar % mass = ( (mass of element) / (total mass) ) * 100 % mass = (2.41 / 3.84) * 100 % mass = (0.6276) * 100 % mass = 62.76 62.76%

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Veronika8Russian

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well you would use the formula, which is, mass percent= g of solute/ g of solute+ of solvent and then you multiply by 100.....so when I did it I did 1.43/3.84+1.43 and multiplied it by 100 giving me 27%

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