Question

Empirical formula of a compound is CH2 and it's molecular weight is 84.The molecular formula if the compound is what?

Answer 1

Empirical formula = CH2
Empirical formula weight = 12+(2*1)= 14

Molecular weight = 84

n= Molecular weight/ Empirical formula weight
= 84/14
n = 6

Molecular formula= [Empirical formula] n
= [CH2]6
= C6H12