1. Warm-up Put into standard form 9.65 x 10-4
Put into scientific notation
78,000
Calculate
(5.4 x 104)(2.2 x 107)
4.5 x 105

2. What is a mole? Copy these questions to answer during the video:
Who discovered the mole?
How much does a mole represent?
How do we use the mole?

3. The Mole A word that represents a number
Mole (or Avogrado’s number) is 6.02 x 1023
We use the mole in Chemistry to work more easily with with large numbers of small particles
For example:
A mole of Carbon atoms
A mole of Oxygen gas molecules
A mole of a compound (NaCl, salt)

4. 12 grams of Carbon = 6.02 x 1023 atoms
The Mole
1 Mole is the exact number of atoms in 12 grams of Carbon-12.
12 grams of Carbon = 6.02 x 1023 atoms

5. Mole Road Map

6. Mole Practice #1

7. Write the conversion factor and solve for the following problems:
Warm Up, Friday
Write the conversion factor and solve for the following problems:
How many moles is 2.80 x 1024 atoms of silicon?
How many atoms is mol of Magnesium?
4.65 moles of Silicon
1.25 x 10^23 atoms of Magnesium

8. Tuesday
Write the conversion factor and solve for the following problems:
How many moles is 1.50 x 1023 molecules of NH3?
How many atoms are in 1.75 mol CHCl3?
Answers: x 10^-1 mol NH3
x 10^24 atoms

9. Take out Mole Practice #2 for me to stamp.
Bell Work Week 2, Friday
Take out Mole Practice #2 for me to stamp.
How many moles are in 45 grams of water?
How many atoms are in 3.91 moles of Xe?
2.5 moles
2.35 x 10^24 atoms

10. Bell Work Week 3, Monday Take out Mole Practice #3 for me to stamp.
How many liters of oxygen gas (O2) is 50 moles of oxygen gas?
How many moles of fluorine is 100 liters of fluorine gas?