Empirical Formula Calculator
Pick each element from the periodic table and enter its mass or percentage. See the moles, the ratio and the empirical formula, then add Mr to get the molecular formula.
What you can do
- Works from masses or percentages
- Shows the full table: moles, dividing by the smallest, whole-number ratio
- Scales up ratios like 1.5 or 1.33 to whole numbers
- Gives the molecular formula when you add the relative molecular mass
- Practise with random questions and worked solutions