Ammonia reacts with oxygen to form nitrogen dioxide and water according to the following equation: 4NH3(gas) + 7O2(g)  --->  4NO2(g) + 6H2O(g) You react ammonia and oxygen, and at the end of the experiment you find that you produced 23 g of water and have 8.52 g of ammonia left over.  Determine the mass of oxygen reacted. Group of answer choices 71.49 g O2 17.66 g O2 40.85 g O2 35.02 g O2 47.66 g O2

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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".