1. The Mole and Single Step Mole Conversions

2. What is a Mole?
A mole (mol) is the amount of a substance that contains as many particles as there are atoms in exactly 12 grams of Carbon-12.
A mole is a unit of measurement, like a dozen eggs.
1 mole = 6.02 X 1023 atoms/molecules. This is called Avogadro’s number.

3. Converting Using Avogadro’s Number:
Things to Remember:
Use your railroad tracks!
The unit you start with goes in the upper left box.
The next box is your conversion factor; the starting unit goes on the bottom!

4. Converting Using Avogadro’s Number:
Moles to Atoms:
Multiply by 6.02 X 1023
Ex: How many atoms are in 47 moles of Copper?
How many molecules are in 1.69 moles of NaCl?

5. Converting Using Avogadro’s Number:
Atoms to Moles:
Divide by 6.02 X 1023
Ex: How many moles are in 41,720 atoms of Nickel?
How many moles are in 51,002,785 molecules of Li2O?