1. What is the molar mass of Calcium Chloride (CaCl2) (to the nearest tenth!)?
111.1g/mol

2. Which has greater quantity of molecules??
If you have exactly one mole each of Carbon Monoxide and Carbon Dioxide, which has a greater mass?
CO2
Which has greater quantity of molecules??
Same!

3. Conversions with Moles

4. # of Representative Particles
Need to use:
Avogadro’s Number
6.02X1023
Need to use:
Molar Mass
(from Periodic Table)
# of Representative Particles
MOLE
MASS

5. How many atoms in 0.250mol of Silver?
Molar Mass
Avogadro’s Number
Both
How many atoms in 0.250mol of Silver?

6. If you have 30g of H3PO4, how many moles is that?
Molar Mass
Avogadro’s Number
Both
If you have 30g of H3PO4, how many moles is that?

7. How many moles are in 3.4X1026 atoms of Gold?
Molar Mass
Avogadro’s Number
Both
How many moles are in 3.4X1026 atoms of Gold?

8. How many molecules in 1.2mol of Nitrogen?
Molar Mass
Avogadro’s Number
Both
How many molecules in 1.2mol of Nitrogen?

9. Molar Mass
Avogadro’s Number
Both
How moles in 1.1g of FeCl3?

10. What is the mass of 3.2mol H2O?
Molar Mass
Avogadro’s Number
Both
What is the mass of 3.2mol H2O?

11. How many molecules of water are in 36.0g of water?
Molar Mass
Avogadro’s Number
Both
How many molecules of water are in 36.0g of water?

12. How many moles in 564g of Copper?
Molar Mass
Avogadro’s Number
Both
How many moles in 564g of Copper?

13. How many atoms in 564g of Copper?
Molar Mass
Avogadro’s Number
Both
How many atoms in 564g of Copper?

14. How many grams in 4moles of Cu(CN)2?
Molar Mass
Avogadro’s Number
Both
How many grams in 4moles of Cu(CN)2?

15. How many moles in 89grams of Lead (IV) Acetate?
Molar Mass
Avogadro’s Number
Both
How many moles in 89grams of Lead (IV) Acetate?

16. What is the mass of 2.3X1024 atoms of silver?
Molar Mass
Avogadro’s Number
Both
What is the mass of 2.3X1024 atoms of silver?

17. How many moles in 8.9X1025 molecules of carbon tetrachloride?
Molar Mass
Avogadro’s Number
Both
How many moles in 8.9X1025 molecules of carbon tetrachloride?

18. Molar Mass
Avogadro’s Number
Both
Mass of 0.425mol N2?

19. How many grams in 9.03X1023 atoms of Calcium?
Molar Mass
Avogadro’s Number
Both
How many grams in 9.03X1023 atoms of Calcium?

20. What is the mass of 3.0mol water?
Molar Mass
Avogadro’s Number
Both
What is the mass of 3.0mol water?

21. 2mol of Fe is how many atoms?
Molar Mass
Avogadro’s Number
Both
2mol of Fe is how many atoms?

22. Molar Mass
Avogadro’s Number
Both
207g of Fe is how many atoms?

23. 1.204X1024 formula units of sodium chloride has what mass?
Molar Mass
Avogadro’s Number
Both
1.204X1024 formula units of sodium chloride has what mass?

24. Molar Mass
Avogadro’s Number
Both
102g of CO2 = ?mol