Calcium combines with bromine to make calcium bromide. The unbalancedand incomplete chemical equation for this reaction is:  Ca(s)  +  Br2(g) -->                  . When completed and balanced, what is the coefficient for bromine?

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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".