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