Consider the reaction below: MnO2 + HCl --> MnCl2 + Cl2 + H2O  If 1.92 mol of MnO2 and 96.4g of HCl react, determine the mass of unused reactant after the reaction.

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A: The number, n = 5 for KMnO4 as it accepts 5 electrons to become Mn2+

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Q: mass

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Q: mass

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Q: 4. Predict the repeat unit for the following polymerizations: а. H2O2 N- b. NCO OCN

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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".