Urea [(NH2)2CO] is prepared by reacting ammonia with carbon dioxide. 2NH3(g) + CO2(g)     →    (NH2)2CO(aq)+H2O In one process, 637.2g of NH3 are treated with 1142g of CO2. Which reactants is limiting reactant? Calculate the mass of (NH2)2CO formed. Calculate the remaining of excess reagent (in grams).

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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".