Agenda
- Investigation: Finding an Empirical Formula — mass before, mass after
- Convert both masses to moles and take the simplest whole-number ratio
- Post every group’s ratio — the spread across the room is the point
- Name it: Empirical and Molecular Formulas — and where the two differ
- Practise: Empirical Formula Practice, starting from your own numbers
Things to do before our next class
- Empirical Formula Practice, first set.
- Journal: why your ratio landed above or below the whole number, with a procedural reason rather than “measurement error”.