Condisder the balanced chemical equation shown. A table of molecular weights is given below. 4 FeCr2O4 + 8 Na2CO3 + 7 O2 → 8 Na2CrO4 + 2 Fe2O3 + 8 CO2 • How many grams of Na2CrO4 can be produced by the reaction of 70.00 grams of FeCr2O4 and an excess amount of all other reactants? Answer grams of Na2CrO4 Molecular Weights FeCr2O4 223.833 g/mol Na2CO3  105.988 g/mol O2      31.998 g/mol Na2CrO4 161.972 g/mol Fe2O3   159.687 g/mol CO2     44.009 g/mol

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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".