You can't determine the molecular formula of a compound solely from its empirical formula. Here's why:

* Empirical Formula: The empirical formula shows the simplest whole-number ratio of atoms in a compound.

* Molecular Formula: The molecular formula shows the actual number of atoms of each element in a molecule.

Here's an example:

* Empirical Formula CH2O: This could represent formaldehyde (HCHO), which has a molecular weight of 30 g/mol.

* Empirical Formula CH2O: This could also represent glucose (C6H12O6), which has a molecular weight of 180 g/mol.

To determine the molecular formula, you need additional information, such as:

* The molecular weight of the compound: Knowing the molecular weight allows you to compare it to the empirical formula weight and determine the multiplier needed to get the actual molecular formula.

Let me know if you have the molecular weight of the compound, and I can help you find the molecular formula!