the molecular formula is calculated as follows find the mole of each molecule that is for carbon = 26.7/12= 2.23 moles hydrogen= 2.24/1=2.24 moles oxygen= 71.1/16=4.44 moles find the mole ratio of each element that is divide all moles by the smallest mole( 2.23)
for carbon=2.23/2.23=1, hydrogen = 2.24/2,23=1 oxygen= 4.44/2.23= 2 the empirical formula = CHO2 therefore the molecular formula=(CHO2)n=270.1 { ( 12x 1) + 1x1) +(16x2)}n=270.1 45n=270.1 n=6 molecular formula is therefore=(CHO2)6=C6H6O12
