Question

If two compounds have the same empirical formula but different molecular formula, they must have _______.
(A) different percentage composition
(B) different molecular weights
(C) same viscosity
(D) same vapour density

Answer 1

THE ANSWER TO YOUR QUESTION IS (B) as % composition is same that is why the compounds have same empirical formula. Also viscosity has no relation with the molecular formula. Moreover vapour density is not necessary that it will be different. I HOPE THIS ANSWER WILL HELP YOU

Answer 2

Answer:

B

If two compounds have the same empirical formula i.e they have same percentage composition so whatever are elements in both compounds have same % composition of elements but both compounds have different Molecular formula i.e their molecular weights are different .

hope this helps you !!