If a solution containing 54.2154.21 g of lead(II) chlorate is allowed to react completely with a solution containing 8.5648.564 g of sodium sulfide, how many grams of solid precipitate will be formed? mass of solid precipitate:   gg How many grams of the reactant in excess will remain after the reaction? mass of excess reactant:   gg Assuming complete precipitation, how many moles of each ion remain in solution? If an ion is no longer in solution, enter a zero (0) for the number of moles. Pb2+=Pb2+=   molmol ClO–3=ClO3–=   molmol Na+=Na+=   molmol S2−S2−   mol

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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".