Question

Molecular Formula Question: Vanillin is the compound containing carbon, hydrogen, and oxygen that gives vanilla beans their distinctive flavor. The combustion of 30.4 mg of vanillin produces 70.4 mg of CO2 and 14.4 mg of H2O. The mass spectrum of vanillin shows a molecular-ion peak at 152 amu. Use this information to determine the molecular formula of vanillin.

Answer 1

convert the masses given to moles. Divide all of the moles by the lowest number you get (to normalize them). Multiply all by a factor (that is the same) to get integers (whole numbers). The numbers you get will be the number of atoms of each species in the compound. This will be the "empirical formula". Use the peak to find the molecular formula.

Answer 2

Thanks

Answer 3

no prob