1. WARM UP Do ACT Prep Passage 5 – Reducing Pollution 5 minutes
Start when the bell rings

2. Avogadro’s Number

3. Avogadro’s Number Amadeo Avogadro Experiments with gas atoms
Working with large numbers of atoms
Used 6.02 x 1023 to help simplify calculations

4. The Mole 6.02 x 1023 Like “dozen” 1 mole paper = 6.02 x 1023 pages
1 mole shoes = 6.02 x 1023 shoes

5. The Mole
6.02 x 1023
# of atoms in 12 g of C-12

6. Mole Conversions From moles to # of atoms/molecules
2.8 mol He x x 1023 atoms He
mol He

7. WRAP UP
Convert 9.37 x 1025 atoms of nickel into moles of nickel.