The Mole Final Exam Review. Counting units: pair dozen gross ream mole.

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Presentation transcript:

The Mole Final Exam Review

Counting units: pair dozen gross ream mole

Counting units: pair2 dozen gross ream mole

Counting units: pair2 dozen12 gross ream mole

Counting units: pair2 dozen12 gross144 ream mole

Counting units: pair2 dozen12 gross144 ream500 mole

Counting units: pair2 dozen12 gross144 ream500 mole

Counting units: pair2 dozen12 gross144 ream500 mole6.02 x 10 23

The mole 1 mole = 6.02 x 10 23

The mole The mole, also called Avogadro's number, is the SI unit for the amount of a substance.

The mole How many roses in 3.5 dozen?

The mole How many roses in 3.5 dozen? 12 roses 3.5 doz x = doz

The mole How many roses in 3.5 dozen? 12 roses 3.5 doz x = 42 roses doz

The mole How many atoms in 3.5 moles?

The mole How many atoms in 3.5 moles? 6.02 x atoms 3.5 mol x = mol

The mole How many atoms in 3.5 moles? 6.02 x atoms 3.5 mol x = mol 21.1 x atoms

The mole How many atoms in 3.5 moles? 6.02 x atoms 3.5 mol x = mol 2.11 x atoms

The mole How many moles are 4.5 x atoms? 1 mol x = 6.02 x 10 23

The mole How many moles are 4.5 x atoms? 1 mol x = 6.02 x mol

Molar Mass of Compounds What is the mass of 1 mole of Al 2 O 3 ?

Molar Mass of Compounds What is the mass of 1 mole of Al 2 O 3 ? 2 moles Al 3 moles O

Molar Mass of Compounds What is the mass of 1 mole of Al 2 O 3 ? 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 Al 2 O 3 ? 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 Al 2 O 3 ? 2 moles Al x 27.0 g/mole = 54.0 g 3 moles O x 16.0 g/mole = 48.0 g g

Molar Mass of Compounds What is the mass of 1 mole of Al 2 O 3 ? 2 moles Al x 27.0 g/mole = 54.0 g 3 moles O x 16.0 g/mole = 48.0 g g

Converting Moles to Mass What is the mass of 1.25 moles Al 2 O 3 ?

Converting Moles to Mass What is the mass of 1.25 moles Al 2 O 3 ? 2.50 moles Al 3.75 moles O

Converting Moles to Mass What is the mass of 1.25 moles Al 2 O 3 ? 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 Al 2 O 3 ? 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 Al 2 O 3 ? 2.50 moles Al x 27.0 g/mole = 67.5 g 3.75 moles O x 16.0 g/mole = 60.0 g g

Converting Moles to Mass What is the mass of 1.25 moles Al 2 O 3 ? 2.50 moles Al x 27.0 g/mole = 67.5 g 3.75 moles O x 16.0 g/mole = 60.0 g g

Tonight’s Homework: Pp , problems 1-4