Question

calculate the molecular formula if it's molecular mass is 90 .. carbon =40% Hydrogen=6.66% OXYGEN=53.34%​

Answer 1

Answer:

Amprical weight=ch2o

=12*12*1*1*16

=30

Molecular mass=n*amprical weight

60=n*30

N=60/30=2

Molecular formula=n*amprical formula

=2*30

=60

C2h4o2

Explanation: