If 432 molecules of CO2 were allowed to react with twice as many molecules of H₂O, how many molecules of the excess reactant would remain (leftover)? 432 molecules 244 molecules 72.0 molecules 83.0 molecules

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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".