1. Chapter 8 Mole Conversions Part 2

2. 3.2: Molecular Mass/Weight Formula Mass/Weight The formula of an Acetylsalicylic Acid (Aspirin) molecule is C 9 H 8 O 4 Acetylsalicylic Acid (Aspirin) has molar mass of 180.159 g/mol How many hydrogen atoms are contained in a 0.372 g tablet?

3. 0.372g C 9 H 8 O 4

4. 0.372g C 9 H 8 O 4 mol 180.159 g

5. 0.372g C 9 H 8 O 4 mol 6.02 x 10 23 molecules 180.159 g mol

6. 0.372g C 9 H 8 O 4 mol 6.02 x 10 23 molecules 8 H atoms 180.159 g mol molecule

7. 0.372g C 9 H 8 O 4 mol 6.02 x 10 23 molecules 8 H atoms 180.159 g mol molecule = 9.94 x 10 21 H atoms

8. What is the mass in grams of one atom of carbon?

9. 12.0 g/mol

10. What is the mass in grams of one atom of carbon? 12.0 g mol

11. What is the mass in grams of one atom of carbon? 12.0 gmol mol 6.02 x 10 23 atoms = 1.99 x 10 -23 g/atom

12. What is the mass in grams of one molecule of water?

13. 18.0 g mol

14. What is the mass in grams of one molecule of water? 18.0 gmol mol 6.02 x 10 23 molecules = 2.99 x 10 -23 g/molecule

15. Information for Upcoming Mole Quiz How does a mole relate to particles and mass? (example: One mole of H 2 O is 6.02 x 10 23 H 2 O molecules and has a mass of 18g). Be able to use this information in factor-label problems. Know how to determine the number of atoms in a molecule. Be able to use this information in factor- label problems. Be able to determine the number of grams/molecule. Identify the diatomic gases. Do metric conversions.

16. Homework Mole Worksheet (#1-20) Notice that answers are provided for this worksheet in your notebook.