Q4.10 The empirical formula and molecular mass of a compound are CH20 and x 180 g respectively. What will be the molecular formula of the compound? (a) CH480, (b) CH20 (c) C6H1206 (d) C2H4O2 Thinking Process (i) Empirical formula shows that number of moles of different elements present in a molecule, so find the number of moles by dividing molecular mass with empirical formula mass. (ii) To calculate the molecular formula of the compound, multiply the number of moles with empirical formula