Valuable minerals (chemicals) can be obtained from ores, which are natually occuring mixtures. One ore cotains 38% magnetite, a mineral with the chemical formual Fe3O4. Fe3O4 contains 72.4% iron. What mass of ore (in tons) would contain 3.5 tons of iron? (Hint: your mass percent conversion factors can have units of tons)

Chemistry: Principles and Reactions
8th Edition
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Chapter2: Atoms, Molecules, And Ions
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Problem 3QAP: Two basic laws of chemistry are the law of conservation of mass and the law of constant composition....
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Valuable minerals (chemicals) can be obtained from ores, which are natually occuring mixtures. One ore cotains 38% magnetite, a mineral with the chemical formual Fe3O4. Fe3O4 contains 72.4% iron. What mass of ore (in tons) would contain 3.5 tons of iron? (Hint: your mass percent conversion factors can have units of tons) 

*Mass percent values used in calculations should be written as conversion factors with units & labels 

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