A compound is found to contain 53.70% iron and 46.30% sulfur. What is its empirical formula?
In 100 g of the compound, there are 53.7 g iron, and 46.3 g of sulfur.
We divide thru by the ATOMIC masses of each constituent:
Now we divide thru by the LOWEST molar quantity to give...
Now, the empirical formula is, by definition, the simplest