2H2 + O2  →  2H2O Which of the following questions would require only one step to solve? [You do not need to solve the question.  Check any question that can be solved with a single step. It can be more than one.]   Group of answer choices: If 5 molecules of H2 react, how many molecules of H2O are produced? If 5 moles of H2 react, how many moles of H2O are produced? If 5 liters of H2 react, how many liters of H2O 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".