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What is the percent cr, by mass, in the steel sample? express your answer numerically as a percentage?

Kathy Robinson

in Chemistry

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Melissa Norris on July 14, 2018

Given:3.40 g sample of steel is used to produce 250.0 mLSolution containing Cr2O72−, Assuming that all Cr is contained in the BaCrO4 at the end. (0.145 g BaCrO4) / (253.3216 g BaCrO4/mol) x (250.0 mL / 10.0 mL) x (1 mol Cr / 1 mol BaCrO4) x (51.99616 g Cr/mol / (3.40 g) = 0.219 = 21.9% Cr


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