Question

Which of the following best explains why a structural formula of a chemical compound is more useful than a molecular formula?

Answer 1

The answer is A) Both formulas identify the specific in a particular compound. However, a structural formula also shows how the atoms in a compound are bonded together.

Molecular formula: 
Advantage: shows chemical composition
Disadvantage: No structural information

Structural formula:
Advantage: shows chemical connectivity
Disadvantage: Minimal three dimensional 

Answer 2

Answer: the correct  answer is (A).

Explanation:

Structural formula not only tells us about the number and types of atoms in a molecule but also tells us about the bonded positions of all the atoms in a molecule of that particular compound.

Molecular structure only tells us about the numbers of atoms and types of atoms present in a molecule of that particular compound.

For example: Molecular formula of propanone and propanal are same that is $C_3H_6O$ but structural formula is different that $CH_3COCH_3$ for propane and $CH_3CH_2CHO$ for propanal. Here structural formula is showing that how the atoms in propanone and propanal are bonded together.

Hence, the correct answer is option (A).