1. Bellringer 3/28 How many moles of calcium are in 425g of Calcium (Ca)?

2. The Mole Part 2

3. Mass – Particle Conversions How many atoms of gold are in 25.0 g of gold?

5. Mass – Particle Conversions How many grams of He are in 5.50 x 10 22 atoms of He?

6. Moles of Compounds Freon has the formula CCl 2 F 2 This now gives us new conversion factors

7. Example How many moles of F are in 5.50 mol of CCl 2 F 2 ?

8. Example How many moles of Al are in 1.25 mol of Al 2 O 3 ?

9. Example How many Cl - ions are in 35.6 g of AlCl 3 ? How many Al +3 ions?