Final answer:
Both formaldehyde (CH₂O) and galactose (C₆H₁₂O₆) have the empirical formula CH₂O, making option D the correct answer.
Step-by-step explanation:
Empirical Formula Explanation
The empirical formula represents the simplest whole-number ratio of the elements in a compound. OCH₂O and C₆H₁₂O₆ both have the same empirical formula, which is CH₂O. This is because when we simplify the molecular formula of C₆H₁₂O₆ (glucose) to the simplest whole-number ratio, we get CH₂O. Therefore, the correct answer to the question of which compounds have the same empirical formula as OCH₂O is D. Formaldehyde and Galactose, as formaldehyde has a molecular formula of CH₂O and galactose has a molecular formula of C₆H₁₂O₆, both of which simplify to the same empirical formula, CH₂O.