When nitrogen dioxide gas dissolves in water, an aqueous solution containing dissolved nitric acid and nitrogen monoxide forms. In terms of mass balance, 138.03 g of NO2 completely reacts with 18.02 g of H2O to form 126.04 g of HNO3 and 30.01 g of NO. When 428 g of NO2 is used, how many grams of H2O are consumed?     How many grams of HNO3 are produced?

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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".