Does D-Mannitol have an empirical formula?

Question

The Molecular formula of D-Mannitol is C6H14O6 is the empirical C3H7O3

Answer 1

In both formulas, the atoms should appear in the same proportions.  If C₆H₁₄O₆ is the molecular formula, the empirical formula could have half as many of each atom, and hence could be C₃H₇O₃, but not C₃H₇O₇.  Maybe O₇ is a typo?

Answer 2

Every chemical compound has an empirical formula.  It is the simplest positive integer ratio of atoms present in a compound. Thus, for D-mannitol (and L-mannitol for that matter), the empirical formula is C₃H₇O₃.  So, you were close, but I'm not sure where you came up with O₇ instead of O₃.