Hydrochloric acid can dissolve solid iron according to the following reaction. Fe(s)+2HCl(aq)→FeCl2(aq)+H2(g) a) What minimum mass of HClHCl in grams would you need to dissolve a 2.4 gg iron bar on a padlock? Express your answer using two significant figures.   B) How much H2H2 would be produced by the complete reaction of the iron bar? Express your answer using two significant figures.

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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".