Cr in an ore exists as Cr203, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate the Cr content as % (w/w) Cr203 (151.99 g/mol), if a 0.8000 g ore sample yields 0.4030 g BaCrO4. O 30.22% (w/w) O 29.99% (w/w) O 60.45% (w/w) O 15.11% (w/w)

Cr in an ore exists as Cr203, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate the Cr content as % (w/w) Cr203 (151.99 g/mol), if a 0.8000 g ore sample yields 0.4030 g BaCrO4. O 30.22% (w/w) O 29.99% (w/w) O 60.45% (w/w) O 15.11% (w/w)

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

Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions

Section: Chapter Questions

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

Cr in an ore exists as Cr203, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate the Cr content as % (w/w) Cr203 (151.99
g/mol), if a 0.8000 g ore sample yields 0.4030 g BaCrO4.
O 30.22% (w/w)
O 29.99% (w/w)
O 60.45% (w/w)
O 15.11% (w/w)

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