* 00 3. Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas to form chromium(III) sulfide and water: Cr,03(s) + 3H,S(g) Cr,S3(s) + 3H20(1) To produce 775 g of Cr,S (a) how many moles of Cr20, are required? mol (b) how many grams of Cr,03 are required? 5. 9. 7. 8. y O

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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".