1. To Do… OWL: due Wednesday (2/21) and Friday (2/23).
Open now.
Lab activity tomorrow
Turn in Chapter 7 and 15 homework Friday in Discussion.
Should have read Chapter 15 (1, 2, 4, 5) for today, Chapter 9 for Thursday.

2. Clicker Question
Which solution is the most concentrated?

3. Solution Problem #1
You have 1.00 mol of sugar in mL of solution. Calculate the concentration in units of molarity.

4. Solution Problem #2
You have a 2.50 M sugar solution. Calculate the number of moles of sugar in mL of this solution.

5. Solution Problem #3
You have a 10.0 M sugar solution. What volume of this solution do you need to have 2.00 mol of sugar?

6. Clicker Question
You add mL of water to mL of a 4.00 M sugar solution. What will happen to the concentration?
A) increase
B) decrease
C) stay the same

7. p370

8. Solution Problem #4
You add mL of water to mL of a 4.00 M sugar solution.
Calculate the concentration of the new solution in units of molarity. (Assume the volumes are additive.)

9. Solution Problem #5
You dissolve g of NaOH in mL of solution. Determine the concentration of the solution in terms of molarity.