A mixture of butene, C4H8, and butane, C4H10, is burned in air to give CO2 and water. Suppose you burn 2.85 g of the mixture and obtain 8.81 g of CO2 and 3.99 g of H₂O. What are the mass percentages of butene and butane in the mixture? Mass percentage of butene = Mass percentage of butane = % %

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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".