Essential Chemistry for IGCSE - Chemical Calculations (Section 1 - No. 32)
What do you need to do to find the molecular formula of a compound if you know its empirical formula?
Find the ratio between the empirical formula mass and the relative molecular mass.
Add the atomic masses of each element in the empirical formula.
Multiply the empirical formula by the number of grams in the compound.
Divide the relative molecular mass by the number of atoms.
Explanation
You have to divide the molar mass of the compound by the empirical formula mass.
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