1. Chemistry 202 Dr. Don DeCoste 3014 Chemistry Annex
11am-12pm Mondays and Wednesdays (after lecture)
10-11 am Tuesdays and 1-2 pm Thursdays
By appointment; open door policy

2. Lon-Capa 1st HW assignment due Friday, 9/8, 10 pm. It is open now.
1st “Quiz” (2nd HW) due Sunday, 9/10 by 10 pm. It will open Friday, 9/8 at 5 pm.

3. For Today Textbook Homework Videos Chapter 3: Stoichiometry
Videos
Chapter 3: Stoichiometry
Problem Solving in Stoichiometry I: The Set-Up
Problem Solving in Stoichiometry II: Method 1
Problem Solving in Stoichiometry III: Method 2
Problem Solving in Stoichiometry IV: Method 3

4. For Wednesday Textbook Homework Videos Chapter 3: Stoichiometry
Challenge Problem: Chapter 3 #128
Chapter 4: Solution Stoichiometry
Concentration and Dilution
Precipitation Reactions and Solubility Rules

5. Chemistry Learning Center
2021 Chemistry Annex
Chemistry TAs available from 9 am – 5pm Mondays – Fridays. Link to the schedule is on the website (Contact Information)
Chemistry 202 TAs in the CLC:
Mondays: 11am – 1 pm
Wednesdays: 3 – 5 pm
Thursdays: 1 – 3 pm

6. Chemical Reaction

7. Clicker Question
Balance the following equation in standard form and determine the sum of the coefficients:
C2H5OH + O2 → CO2 + H2O
a) 4
b) 5
c) 8
d) 9
e) 10

8. Problem Solving: A Journey
Where Are We Going?: What are we trying to solve? What does this mean?
Where Have We Been?: What do we know? What is given in the problem, and what is our knowledge base?
How Do We Get There?: How do we connect what we know to what we are trying to solve?

9. Challenge Problem: Ch. 3