A sample contains #"21.96% S"# and #"78.04% F"#. What is its empirical formula?
The empirical formula represents the lowest whole-number ratio of elements in a compound.
Since the percentages add up to 100%, you can change the percentages to mass in grams.
Convert the mass of each element to moles using the molar mass of each element. The molar mass of sulfur =
Divide the number of moles by the lowest number of moles to find the lowest whole-number ratio.
The empirical formula is