A compound has the empirical formula CH2O and a molar mass of 180.18 g/mol. Find its molecular formula.

Find the empirical formula mass.
CH2O = 12.01 + 2(1.008) + 16.00 = 30.03 g/mol
multiplier = 180.18 g/mol / 30.03 g/mol = 6
Multiply each subscript in CH2O by 6.
The molecular formula is C6H12O6.