Agenda

  1. Given a target mass of product, work backwards to the reactant mass
  2. Run it — weigh out your own calculated amount and see what you get
  3. Compare predicted against actual across the room, significant figures kept
  4. Name it: Stoichiometry — the mole ratio as the step in the middle
  5. Practise: Stoichiometry Practice, in pairs, showing every step

Things to do before our next class

  • Stoichiometry Practice, questions 1–8, showing the mole ratio step.
  • Journal: where your prediction and your result parted company, and which of the two you trust more.