Molecular Formula: Gives the actual numbers of atoms in a molecule
If you know the empirical formula and molecular mass, you can calculate the molecular formula:
1. Find the mass of the empirical formula(just like relative formula mass).
2. Divide molecular mass by empirical mass. This shows how many multiples of the empirical formula are in the molecular formula.
3. Multiply the empirical formula by that number to find the molecular formula.
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