4. The iron, Fe, content of silicate rocks is often expressed as FeO or Fe₂O3. What is the difference between these two expressions? The FeO content in the mantle is 8.2wt. %. Calculate the wt% of Fe₂O3 in the mantle if all of the Fe is assumed to be in the form of Fe₂O3 instead of FeO. (M. Fe = 55.845 g/mol; M. O = 15.9994 g/mol)

4. The iron, Fe, content of silicate rocks is often expressed as FeO or Fe₂O3. What is the difference between these two expressions? The FeO content in the mantle is 8.2wt. %. Calculate the wt% of Fe₂O3 in the mantle if all of the Fe is assumed to be in the form of Fe₂O3 instead of FeO. (M. Fe = 55.845 g/mol; M. O = 15.9994 g/mol)

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter21: The Chemistry Of The Main Group Elements

Section: Chapter Questions

Problem 130SCQ

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Nn.156. Subject :- Chemistry
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