1. Bianca Fernandez will you go to homecoming with Greg Somers? Day 6 10-7

2. How many atoms in 2 moles of CO 2 ? Day 6 10-7 2 moles CO 2 3 atoms 1 molecule = 6.022e23 molecules 1 mole CO 2 3.6e24 atoms x x

3. Period 1: Lab Reports are due now Period 3: Lab Reports are due tomorrow Day 6 10-7

4. 1. Write a balanced chemical equation for the reaction between solid zinc and solid sulfur. 2. What is the reaction type? Day 3 10-2

6. CORRECT AMOUNT = 3.21 grams 1/10 the molar mass of Zn reacts with 1/10 of the molar mass of S So why is it 1/10 for 1/10? Why not 1/10 for 2/10 or 3/10? And where’d the masses come from?

7. The key came from a combination of the atomic masses and the chemical equation: Zn + S  ZnS For every one “piece” of Zn we need one “piece” of S to form one “piece of ZnS 1/10 for 1/10

8. So where’d the masses come from?

9. So what was the key?

10. Day 6 9-27 Read + review section 10.1 (pages 306-315) AND complete #s 9-15  due on Wednesday 9-28 AND last 3 on notes page

11. Define mole. Explain how a mole is like a counter. Explain how a mole relates to mass.

12. Particles Molecules Atoms Mass (grams) Volume (liters) MOLES Avogadro’s # - 6.022e23 Molar mass Molar Volume – 22.4 L/mol

13. If you started with 1.5 moles of zinc for the zinc and sulfur lab, how many grams of zinc would you have had? Day 5 10-4

15. You do NOT have to write this one: Sit with your lab group from yesterday and get out your lab handout! Day 6 9-27