Answer:
The compound has a molecular formula of C9H18
Step-by-step explanation:
Step 1: Data given
the compound has an empirical formula of CH2
The molar mass of the compound is 126 g/mol
Molar mass C = 12 g/mol
Molar mass H = 1 g/mol
Step 2: Calculate the molar mass of the empirical formula
We have 1x C and 2x H
Molar mass = 1*12 + 2*1 = 14 g/mol
Step 3: Calculate the molecular formula
126 / 14 = 9
We have to multiply the empirical formula by 9 to have the molecular formula
9*(CH2) = C9H18
The compound has a molecular formula of C9H18