Uploaded April 2025 | Updated September 2026, 21 hours ago

---

PLUS is the amazing new learning system from Freesciencelessons. PLUS contains thousands of interactive questions to embed your knowledge and understanding. All your answers are tracked, allowing you to assess the areas that you need to work on and boost your grades. Check it out at freesciencelessons.co.uk/plus

In this video, we look at how to determine the empirical formula of a compound by reacting masses. First, I show you a worked example of the calculation. I then give you two examples to try yourself.