When you perform the following reaction: MnO2 (s) + 4 HCI (aq) -> MnCl (aq) + 2 H20 (I) + CIz (g) You produce 54.30 g of MnCl. Your percent yield was 79.36%. Assuming you had excess MnOz, how many grams of HCI did you react?

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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".