commercial method of manufacturing hydrogen involves the reaction of iron and steam, as shown. Which of the following is TRUE about the reaction? 3 Fe(s)  +  4 H2O(g) ➜ Fe3O4(s)  +  4 H2(g) Select one: a.Oxygen gains electrons. b.Iron gets oxidized. c.The hydrogen gas acts as an acid. d.This is an example of a precipitation reaction.

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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".