Today we will:
Learn about the mole
Counting units: • pair
• dozen
• score
• gross
• ream
• mole
Counting units: • pair 2
• dozen
• score
• gross
• ream
• mole
Counting units: • pair 2
• dozen 12
• score
• gross
• ream
• mole
Counting units: • pair 2
• dozen 12
• score 20
• gross
• ream
• mole
Counting units: • pair 2
• dozen 12
• score 20
• gross 144
• ream
• mole
Counting units: • pair 2
• dozen 12
• score 20
• gross 144
• ream 500
• mole
Counting units: • pair 2
• dozen 12
• score 20
• gross 144
• ream 500
• mole602213670000000000000000
Counting units: • pair 2
• dozen 12
• score 20
• gross 144
• ream 500
• mole 6.02 x 1023
The mole
1 mole = 6.02 x 1023
The mole
The mole, also called Avogadro's number, is the SI unit for the amount of a substance.
The moleHow many roses in 3.5 dozen?
The moleHow many roses in 3.5 dozen?
12 roses
3.5 doz x ----------------- =
doz
The moleHow many roses in 3.5 dozen?
12 roses
3.5 doz x ----------------- = 42 roses
doz
The moleHow many atoms in 3.5 moles?
The moleHow many atoms in 3.5 moles?
6.02 x 1023 atoms
3.5 mol x ------------------------- =
mol
The moleHow many atoms in 3.5 moles?
6.02 x 1023 atoms
3.5 mol x ------------------------- =
mol
21.1 x 1023 atoms
The moleHow many atoms in 3.5 moles?
6.02 x 1023 atoms
3.5 mol x ------------------------- =
mol
2.11 x 1024 atoms
The moleHow many moles are 4.5 x 1024 atoms?
1 mol
4.5 1024 x ----------------------- = 6.02 x 1023
The moleHow many moles are 4.5 x 1024 atoms?
1 mol
4.5 1024 x ----------------------- = 6.02 x 1023
7.48 mol
Homework: Problems 1-4 on pages 311-312.
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