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April 21, 2014

Homework Help: chemisty

Posted by hope on Saturday, February 5, 2011 at 11:29pm.

A mixture contains only NaCl and Al2(SO4)3. A 1.76-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the precipitate is 0.126 g. What is the mass percent of Al2(SO4)3 in the sample?

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