The foul odor of rancid butter is due largely to to butyric acid, a compound containing carbon, hydrogen, and oxygen. Combustion analysis of a 4.30 gram sample produced 8.59 grams of CO2 and 3.52 grams of water. Hint: 0.0979 moles of oxygen came from the butyric acid! What is the empirical formula for butyric acid?  In a separate experiment, the molar mass of butyric acid was determined to be 88.10 g/mol. What is the molecular formula of it?

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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".