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What is the empirical formula of calcium sulfate?
The empirical formula is CaSO₄.
The empirical formula tells us the simplest whole-number ratio of the different types of atoms in a compound.
We know that the molecular formula of calcium sulfate is CaSO₄.
To get the empirical formula, we divide the subscripts by their highest common factor (1).
This gives you the empirical formula CaSO₄.