ii ) 1_Consider using 10.3 g of Cr ( s ) and 10.0 g of Se ( s ) in this reaction . Calculate the theoretical yield of Cr2S3 ( s ) . 2_What mass of the excess reactant remained unreacted

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A:

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".