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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 117E: Bacterial digestion is an economical method of sewage treatment. The reaction is an intermediate...

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Question

Magnetite has a chemical formula of Fe₃O₄. The atomic mass of iron (Fe) is 56 g/mole, and for oxygen (O) is 16 g/mole. What is the mass (in grams) of a mole of magnetite?

Answer g/mole

Next, consider the mass of oxygen that must be removed from a mole of magnetite during the purification process, in order to yield pure iron. What is the mass percentage of magnetite represented by pure iron?

Answer %

Suppose a new and potentially economic ore body has been identified. It contains 60% magnetite by mass. How much iron will a metric ton (=1000 kg) of this ore yield?

Answer kg of Fe per 1 metric ton of ore.

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