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21-01-2024
Chemistry

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A mixture contains only NaCl and Al2(SO4)3. A 1.42-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 0.124 g. What is the mass percent of Al2(SO4)3 in the sample?

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