A 0.8000-g sample of iron ore containing 21.00% Fe is analyzed gravimetrically. If the final precipitate (assumed to be Fe,03) contains 20.0 mg of Al,03 by mistake, what percentage of Fe does the analyst find?

A 0.8000-g sample of iron ore containing 21.00% Fe is analyzed gravimetrically. If the final precipitate (assumed to be Fe,03) contains 20.0 mg of Al,03 by mistake, what percentage of Fe does the analyst find?

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 12.107PAE

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Question

A 0.8000-g sample of iron ore containing 21.00% Fe is analyzed gravimetrically. If the final
precipitate (assumed to be Fe;03) contains 20.0 mg of Al;O3 by mistake, what percentage of
Fe does the analyst find?

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