A substance has an empirical formula of ch2 and a molar mass of 56 grams per mole. The molecular formula for this compound is

The molecular formula for the compound is C4H8.

Explanation:

Emperical formula is CH2

Molar mass = 56 g/mol

Molar mass = (CH2) n

56 = (12 + 1*2) n

56 = (12 + 2) n

14n = 56

n = 56/14 = 4

Molecular formula = (CH2) n = (CH2) 4 = C4H8