1. STOICHIOMETRY
Mole to Mole

2. The calculation of quantities in chemical equations is called stoichiometry.
In every chemical reaction the mass and atoms stay the same.
The coefficients represent the numbers of moles or atoms and molecules.

3. In the reaction 2CO + O2  2CO2, the ratio of moles of oxygen used to moles of CO2 produced is 1:2
A correct interpretation of the balanced equation 2Al(s) + 3Pb(NO3)2(aq)  2Al(NO3)3(aq) + 3Pb(s) is …
2 moles Al + 3 moles Pb(NO3)2  moles Al(NO3)3 + 3 moles Pb

4. In C5H12 + 8O2  5CO2 + 6H2O
9 moles of reactants chemically change into 11 moles of product.

5. To convert from moles to moles:
start with the given
use one times sign
what you want should be on top
use given unit on the bottom
write the coefficients in front of the units

6. Ex: How many moles of aluminum oxide are produced when 0
Ex: How many moles of aluminum oxide are produced when 0.64 mol of aluminum reacts with oxygen?
4Al + 3O2  2Al2O3
start with the given
use one times sign
what you want should be on top
use given unit on the bottom
write the coefficients in front of the units

7. Ex: How many moles of aluminum oxide are produced when 0
Ex: How many moles of aluminum oxide are produced when 0.63 mol of oxygen reacts with aluminum?
4Al + 3O2  2Al2O3
start with the given
use one times sign
what you want should be on top
use given unit on the bottom
write the coefficients in front of the units

8. Ex: If 3.0 moles of HCl are consumed in the reaction below; how many moles of FeCl3 are produced?
6HCl + Fe2O3  2FeCl3 + 3H2O
start with the given
use one times sign
what you want should be on top
use given unit on the bottom
write the coefficients in front of the units

9. Ex: Given the balanced equation 16HCl + 2KMnO4 
2KCl + 2MnCl2 + 5Cl2 + 8H2O
if 1.0 mol of KMnO4 reacts, how many moles of H2O are produced?
start with the given
use one times sign
what you want should be on top
use given unit on the bottom
write the coefficients in front of the units

10. EX: Calculate the number of moles of Al2O3 that are produced when 0
EX: Calculate the number of moles of Al2O3 that are produced when 0.60 mol of Fe is produced in the following reaction.
2Al + 3FeO  3Fe + Al2O3
start with the given
use one times sign
what you want should be on top
use given unit on the bottom
write the coefficients in front of the units