1. To Do… Discussion Section tomorrow. OWL: Tomorrow and next Friday
Turn in write-up to Nuts&Bolts activity.
Turn in Chapter 7 and Chapter 15 text homework.
OWL: Tomorrow and next Friday
Lectures
Continue reading Chapter 9 and doing the text homework.

2. Nuts and Bolts Activity
Understand significance of results.
How does this relate to a chemical reaction?
What was always true about all cases?
All major concepts of stoichiometry are in this activity
Go back to it if you struggle with Chapter 9.

3. p199

4. p199

5. Activity: BCA Table Set up BCA Table [Before, Change, After].
Amounts must be in terms of number of moles.
At least one reactant is completely used up (goes to zero at After).
Change row: same ratio as the balanced equation.

6. Method 1: Have vs. Need Compare what you HAVE with what you NEED.
The limiting reactant determines the amount of product.
The amount of leftover reactant is the difference between what you HAVE and what you NEED.

7. Method 2: Maximum Product
Determine the maximum amount of product from each reactant.
The reactant which produces the least amount of product is the limiting reactant.
The least amount of product is the amount of product formed.

8. Stoichiometry
Determine the amount(s) of reactant(s) or product(s) given amount(s) of reactant(s) or product(s).
We must have a balanced chemical equation.
Reactions occur by numbers of atoms/molecules.

9. Determine Number of Moles
Use mass and molar masses.
Use volume and concentration for solutions.
Use pressure, volume, and temperature for gases.