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

Avogadro’s Number

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

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

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

Mole Conversions From moles to # of atoms/molecules 2.8 mol He x 6.02 x 1023 atoms He 1 1 mol He

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