1. Do Now Take out HW to be checked Short Molarity Quiz tomorrow!
Unit 2 Test next WED!

2. Molarity “BINGO” Teams of 2-3
Solve problems on separate sheet of paper
If answer is on your card, write in the units and mark the box

3. Determine the molarity of 500. mL of a solution with 0
Determine the molarity of 500. mL of a solution with 0.35 mol of dissolved solute.
0.70 M

4. How many moles of MgSO4 are contained in 50. mL of a 3.0 M solution?

5. How many liters of water are needed to make a 4 M solution using 100 grams of LiBr?

6. How many grams of KNO3 are needed to prepare 25 mL of a 2.0 M solution?

7. A 200. mL sample of a solution contains 4. 0 g of NaOH
A 200. mL sample of a solution contains 4.0 g of NaOH. What is its molarity?
0.50 M

8. How many moles of solute are contained in 3.0 L of a 1.5 M solution?

9. How many liters of solvent are required to make a 0
How many liters of solvent are required to make a 0.88 M solution using grams of LiF?
1.12 L

10. How many grams of CaCl2 are dissolved in 80.0 mL of a 0.75 M solution?

11. What is the molarity of 300 mL of a solution that contains 0
What is the molarity of 300 mL of a solution that contains 0.60 mol of dissolved ammonia?
2 M

12. How many liters of water are needed to make a 0
How many liters of water are needed to make a 0.75 M solution using 75 grams of PbO?
0.45 L

13. What is the molarity of 5. 0 L of a solution containing 200
What is the molarity of 5.0 L of a solution containing 200. g of dissolved CaCO3?
0.40 M

14. How many grams of NaCl are needed to prepare 500. mL of a 0
How many grams of NaCl are needed to prepare 500. mL of a M solution?
11.7 g

15. How many liters of water are required to make a 3
How many liters of water are required to make a 3.4 M solution using 78 grams of C3H8O?
0.38 L

16. What is the molarity of 750 mL of a solution that contains 40
What is the molarity of 750 mL of a solution that contains 40.0 g of dissolved CuSO4?
0.33 M

17. Solutions Mini Lab Pt 1

18. Making Solution B from A: Making C from A: Making D from A:
Pour 100 mL from beaker A into beaker B
Making C from A:
Making D from A:

19. Why Dilutions are Important
Stock chemicals are concentrated. We generally don’t use super concentrated chemicals in lab, so we dilute them
Easier to dilute a solution than to make it more concentrated…

20. Dilutions Practice

21. Solutions Mini Lab Pt 2: Dilutions