1. Austin Powers-the Mole

2. Tom LehRer-The mole Song

3. The Mole

4. What is a mole? Commonly abbreviated mol
SI unit used to measure the amount of substance
The amount in a mole is 6.02 × 1023 particles
1 mol = 6.02 × 1023 particles
(Avogadro's number)

5. What kinds of things? Number of atoms is for an element
Number of formula units is for an ionic compound
Number of molecules is for a compound that is covalently bonded

6. Example 1
Given 4.25 mol of sodium chloride, determine the number of formula units.

7. Calculate the number of molecules in 12.6 mol of sulfer dioxide (SO2).
Example 2
Calculate the number of molecules in mol of sulfer dioxide (SO2).

8. How many moles are in 6.75 × 1024 atoms of nickel (Ni)?
Example 3
How many moles are in 6.75 × atoms of nickel (Ni)?

9. Example 4
How many moles are in 6.78 x 1023 formula units of magnesium chloride?