Question

the empirical formula of a compound is CH2O. its vapour density is 45 .its molecular formula is​

Answer 1

relative molecular mass=vapour density *2

;rmm=45*2

=90

(CH2O)=90

(12+2+16)n=45

(30)n=90

n=90/30

n=3

the molecular formula=(C3H6O3)

hope this is help you