Final answer:
The molecular formula of the compound is C5H10.
Step-by-step explanation:
The molecular formula of a compound can be determined from its empirical formula and its molar mass. In this case, the empirical formula of the compound is CH2. To find the molecular formula, we need to calculate the molar mass of the empirical formula and compare it to the given molecular mass of 70 g/mol.
The molar mass of CH2 is calculated as follows: 1 (atomic mass of carbon) + 2 (atomic mass of hydrogen) = 12 g/mol + 2 g/mol = 14 g/mol.
To determine the molecular formula, we divide the given molecular mass (70 g/mol) by the molar mass of the empirical formula (14 g/mol): 70 g/mol ÷ 14 g/mol = 5.
Therefore, the molecular formula of the compound is 5 times the empirical formula, which gives us C5H10.