the mole final exam review. counting units: pair dozen gross ream mole

The Mole

Final Exam Review

Counting units: • pair

• dozen

• gross

• ream

• mole

Counting units: • pair 2

• dozen

• gross

• ream

• mole

Counting units: • pair 2

• dozen 12

• gross

• ream

• mole

Counting units: • pair 2

• dozen 12

• gross 144

• ream

• mole

Counting units: • pair 2

• dozen 12

• gross 144

• ream 500

• mole

Counting units: • pair 2

• dozen 12

• gross 144

• ream 500

• mole602213670000000000000000

Counting units: • pair 2

• dozen 12

• 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

Molar Mass of Compounds

What is the mass of 1 mole of Al2O3?

Molar Mass of Compounds

What is the mass of 1 mole of Al2O3?

2 moles Al

3 moles O

Molar Mass of Compounds

What is the mass of 1 mole of Al2O3?

2 moles Al x 27.0 g/mole

3 moles O x 16.0 g/mole

Molar Mass of Compounds

What is the mass of 1 mole of Al2O3?

2 moles Al x 27.0 g/mole = 54.0 g

3 moles O x 16.0 g/mole = 48.0 g

Molar Mass of Compounds

What is the mass of 1 mole of Al2O3?

2 moles Al x 27.0 g/mole = 54.0 g

3 moles O x 16.0 g/mole = 48.0 g

-------

102.0 g

Molar Mass of Compounds

What is the mass of 1 mole of Al2O3?

2 moles Al x 27.0 g/mole = 54.0 g

3 moles O x 16.0 g/mole = 48.0 g

-------

102 g

Converting Moles to Mass

What is the mass of 1.25 moles Al2O3?

Converting Moles to Mass

What is the mass of 1.25 moles Al2O3?

2.50 moles Al

3.75 moles O

Converting Moles to Mass

What is the mass of 1.25 moles Al2O3?

2.50 moles Al x 27.0 g/mole

3.75 moles O x 16.0 g/mole

Converting Moles to Mass

What is the mass of 1.25 moles Al2O3?

2.50 moles Al x 27.0 g/mole = 67.5 g

3.75 moles O x 16.0 g/mole = 60.0 g

Converting Moles to Mass

What is the mass of 1.25 moles Al2O3?

2.50 moles Al x 27.0 g/mole = 67.5 g

3.75 moles O x 16.0 g/mole = 60.0 g

----------

127.5 g

Converting Moles to Mass

What is the mass of 1.25 moles Al2O3?

2.50 moles Al x 27.0 g/mole = 67.5 g

3.75 moles O x 16.0 g/mole = 60.0 g

----------

127 g

Tonight’s Homework:

Pp 311-312, problems 1-4