1,2 of carbon combined with 0,1 grams of hydrogen to form a compound . a.FIND THE EMPIRICAL FORMULA OF A COMPOUND
b.ITS Mr WAS FOUND TO BE 78 ,FIND THE MOLECULAR FORMULA
mols C = 1.2/12 = 0.1
mols H = 0.1/1 = 0.1
empirical formula is C1H1 or CH.
empirical formula weight is 12 + 1 = 13
molecular weight is 78
78/13 = 6
So molecular formula is (CH)6 or C6H6.