3. Why is it necessary to use structural formulas to represent many organic compounds
rather than molecular formulas?

Respuesta :

Structural formulas are helpful because they explain the properties and structure of the compound which empirical and molecular formulas cannot always represent.

Answer:

See below.

Explanation:

Because there maybe isomers which have the same molecular formula but different structures.

For example some mono-saccharides   have a molecular formula C6H12O6, of  which glucose is one,  have 8 different structures (isomers).