A certain compound is found to have the percent composition (by mass) of 85.63% C and 14.37% H. The molar mass of the compound was found to be 42.0 g/mol. Calculate the empirical formula and the molecular formula.

Question

Quizplus · Accepted Answer

The empirical formula is CH₂, calculated from the percent composition. The molar mass of the empirical formula is 14 g/mol. The molecular formula is C₃H₆, as the molar mass of the compound (42 g/mol) is three times the empirical formula mass.

A Certain Compound Is Found to Have the Percent Composition