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

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Presentation on theme: "The Mole Final Exam Review. Counting units: pair dozen gross ream mole."— Presentation transcript:

1 The Mole Final Exam Review

2 Counting units: pair dozen gross ream mole

3 Counting units: pair2 dozen gross ream mole

4 Counting units: pair2 dozen12 gross ream mole

5 Counting units: pair2 dozen12 gross144 ream mole

6 Counting units: pair2 dozen12 gross144 ream500 mole

7 Counting units: pair2 dozen12 gross144 ream500 mole602213670000000000000000

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

9 The mole 1 mole = 6.02 x 10 23

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

11 The mole How many roses in 3.5 dozen?

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

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

14 The mole How many atoms in 3.5 moles?

15 The mole How many atoms in 3.5 moles? 6.02 x 10 23 atoms 3.5 mol x ------------------------- = mol

16 The mole How many atoms in 3.5 moles? 6.02 x 10 23 atoms 3.5 mol x ------------------------- = mol 21.1 x 10 23 atoms

17 The mole How many atoms in 3.5 moles? 6.02 x 10 23 atoms 3.5 mol x ------------------------- = mol 2.11 x 10 24 atoms

18 The mole How many moles are 4.5 x 10 24 atoms? 1 mol 4.5 10 24 x ----------------------- = 6.02 x 10 23

19 The mole How many moles are 4.5 x 10 24 atoms? 1 mol 4.5 10 24 x ----------------------- = 6.02 x 10 23 7.48 mol

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

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

22 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

23 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

24 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 ------- 102.0 g

25 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 ------- 102 g

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

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

28 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

29 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

30 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 ---------- 127.5 g

31 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 ---------- 127 g

32 Tonight’s Homework: Pp 311-312, problems 1-4


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