A gaseous hydrocarbon is made up of 82.8% carbon by mass. An amount of  0.0204 mol of the gas is found to have a mass of 1.18g. a. Determine the empirical formula of the gas. b. Determine the molecular mass of the gas. c. Determine the molecular formula of the gas.

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A:

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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".