Question

True or false? Constitutional isomers and conformations have the same molecular formula.

Answer 1

I think the question is asking two separate questions.
#1. Constitutional isomers have the same molecular formula. T or F
#2. Conformers have the same molecular formula. T or F.
Aren't both true?
Isn't that true?

Answer 2

Constitutional isomers have the same molecular formula but different atom connectivity.
Conformational isomers have the same molecular formula and the same atom connectivity but different spatial arrangements due to rotation about single bonds.

The answer is true.