1. Stoichiometry- this will be the hardest topic you will learn all year!
Mole-Mole
January 26th & 27th
This will be the hardest topic you will learn all year

2. Expectations with new material:
While I am going over this lesson I should be the only one talking- if you have a question raise your hand
This will be challenging, but even so I do not want to see you quit
Stoichiometry- this will be the hardest topic you will learn all year

3. Why do we use it? Stoichiometry
-A process we use in chemistry to figure out how much of something we will produce when starting with a certain amount

4. Stoichiometry- Moles
“Moles” are actually the coefficients out in front of a reaction.
Ex: 2H2O2  O2 + 2H2O
How many moles do we have of H2O2?
How many moles do we have of O2 ?
How many moles do we have of H2O?
**This means you must make sure your equation is balanced before you solve the problem**

5. When converting from Mole to Mole:
How do we do it? When calculating mole to mole, you will be using a mathematical technique called Dimensional Analysis

6. Formula will use when converting from mole to mole:
What you see below is a basic example of the layout of this type of problem. 1
Moles initially given in problem
Moles of “given” from balanced equation
Moles of what you want to “find” from balanced equation

7. Steps to solving Mole to Mole problems:
1. Balance the chemical equation 2. Plug numbers into the formula using the word problem and the chemical equation

8. Example problem #1:
2KClO3 2KCl + 3O2 How many moles of Oxygen are produced by the decomposition of 6 moles of KClO3?

9. Example Problem #2:
Zn + 2HCl  ZnCl2 + H2 How many moles of H2 are produced from the reaction of 3 moles of Zn?

10. Example Problem #3: C3H8 + 5O2  3CO2 + 4H2O
How many moles of O2 are necessary to react completely with 4 moles of C3H8?

11. Partner Problems
1. K3PO4 + Al(NO3)3  3KNO3 + AlPO4 How many moles of KNO3 are produced when 2 moles of K3PO4 react completely? 2. N2 + 3H2  2NH3 How many moles of NH3 are produced when reacted with 6 moles of N2?

12. Independent Work Time
You will be passed a worksheet. Complete all of the problems.
There should be NO talking during this time
Work on this BY YOURSELF.

13. Al2(SO3)3 + 6 NaOH  3 Na2SO3 + 2 Al(OH)3
Exit Slip
Why do we use stoichiometry?
2. ____P + ____Br2  ___PBr3
If Nicole used 5 moles of Br2 to make a reaction, calculate how many moles of PBr3 she must have produced?
3. Given the following equation, If moles of Al2(SO3)3 is reacted, determine how many moles of Al(OH)3 is produced.
Al2(SO3)3   +  6 NaOH   3 Na2SO3    +  2 Al(OH)3