Aluminum metal reacts with bromine according to the following unbalanced equation: Al (s) + Br₂ (1)→ AlBr3 (s) Suppose you want to make 8.90 g of aluminum bromide. (a) What mass of aluminum metal is needed? 4. (b) What mass of bromine is needed? (c) If only 8.84 g of aluminum bromide is obtained, what is the percent yield of AlBrz? Formula weights (g/mol): Al 26.9815 Br₂ 159.808 AlBr3 266.69

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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".