A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3. What is the %Fe in Ore B?

Chemistry by OpenStax (2015-05-04)
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Chapter18: Representative Metals, Metalloids, And Nonmetals
Section: Chapter Questions
Problem 25E: A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric...
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A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3. What is the %Fe in Ore B?

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