1. CHEMISTRY
Feb 24, 2011

2. Warm Up Place your homework on the table
How many moles are there in 67 L of H2 gas?
How many moles are there in 78 g of Mg(OH)2?

3. Agenda Warm Up Grade Unit 8 Worksheet 1 Unit 8: Intro to Mole Part II
Quiz
Homework
Unit 8 Worksheet 2
Test Make Up
Friday (Last Day)

4. Grade Homework
Unit 8 Worksheet 1

5. Mole Conversions 3 Step Process (Refer to chart)
How many atoms are in 2L of Oxygen gas?
Where do you begin? (the given: Volume)
What do you need in the end? (atoms)
How many conversion factors do we need?
Volume to moles
Moles to atoms
2 L x 1 mole x 6.02x1023 atoms of O2 = 5.38 x L 1 mole atoms

6. Practice
How many molecules are there in 98 g of Potassium hydroxide?

7. How many grams are there in 4 x 1024 molecules of Iron (II) chloride?

8. How many molecules are there in 15 L of Cl2 gas?

9. What is the volume of gas (in L) in 5 x 1025 molecules of O2?

10. Unit 8 Quiz #1
How many grams are there in 4.5 moles of sodium chloride?
How many moles are there in 3.25 x 1025 atoms of silver?
How many molecules are there in 96 g of carbon dioxide?
How many grams are there in 4 x 1024 molecules of Iron (II) chloride?

11. Closure
Reflect learning on Mole Calculations