Empirical Formula: Simplest Whole Number Ratio of Atoms in a Substance

The video explains the concept of empirical formula in chemistry. The video also talks about how to convert the molecular formula into the empirical formula and vice versa. The video presents examples of how to determine the empirical formula from the masses of elements used to make the compound, and how to determine the molecular formula from the empirical formula and relative formula mass. The video provides step-by-step instructions in calculating and deriving the empirical and molecular formulae.