lid sodium hydroxide is slowly added to 75.0 mL of a 0.238 M iron(III) sulfate solution until the concentration of hydroxide ion 0.0576 M. The mass of iron(III) ion remaining in solution is grams.

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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".