1. Stoichiometry

2. Stoichiometry
The Proportional relationship between two or more substances during a chemical reaction.

3. 4 Simple rules 1. Write Down the Given 2. Convert to moles
3. Use the mole ratio
4. Convert to desired units

4. You need to know what you start with and what you need to end with.
4 Simple rules
1. Write Down the Given
You need to know what you start with and what you need to end with.

5. 4 Simple rules 2. Convert to moles One MOLE Volume Mass
# of particle units
Volume
Mass
Molar Mass from periodic table
22.4 L
6.02 x 1023 atoms, molecules, or formula units

6. Where does the mole ratio come from?
4 Simple rules
3. Use the mole ratio
Where does the mole ratio come from?

7. 4 Simple rules 3. Use the mole ratio
The mole ratio comes from the coefficients in a balanced Chemical Equation

8. 4 Simple rules 3. Use the mole ratio
Fe2O + 2 Li Li2O + 2 Fe
What is the ratio between Fe and Fe2O?

9. 4 Simple rules 3. Use the mole ratio
Fe2O + 2 Li Li2O + 2 Fe
What is the ratio between Fe and Li?

10. The coefficients can represent # of moles or # of molecules.
4 Simple rules
3. Use the mole ratio
The coefficients can represent # of moles or # of molecules.

11. 4 Simple rules 4. Convert to desired units
If grams are desired use mass from P.T.
If you need liters use 22.4L
If you need atoms or molecules 6.02 x 1023
If moles are what is needed you are already done.

12. 1 mole of (starting element/
Convert to desired unit.
Grams from Periodic
Table if mass
22.4 L if volume
6.02 x 1023 atoms/molecules
Mole ratio of desired compound from the balanced equation.
1 mole of (starting element/
molecule)
Write Down the given
Grams from Periodic
Table if mass
22.4 L if volume
6.02 x 1023 atoms/molecules
1 mole of (ending element/
molecule)
Mole ratio of given from balanced equation.

13. The End