Given the following reaction, identify only those chemical species that are undergoing a chemical change: Pb(ClO4)2  +  2 NaBr  →  PbBr2  +  2 NaClO4 Group of answer choices A. Not enough information B. Pb and ClO41- C. Pb2+ and Br1- D. Na+ and ClO41-

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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".