1. Urea (CH N₂O) and water (H₂O) are formed when ammonia (NH3) reacts with carbon 2 dioxide (CO₂). If there are 10 grams of NH3 and 10 grams of CO₂: a) Which of the reactants is the limiting reactant? b) Which one is the excess reactant?

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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".