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- 1. Multiple Choice
What is the molarity of 4 g of NaCl in 3,800 mL of solution?
0.018 M
0.0011 M
1.052 M
0.062 M
- 2. Multiple Choice
How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl?
0.625 g NaCl
625 g NaCl
36.56 g NaCl
0.04 mol NaCl
- 3. Multiple Choice
Find the molarity of 186.55 g of sucrose (C12H22O11) in 250 mL of water.
2.18 M
0.746 M
1.18 M
0.545 M
- 4. Multiple Choice
Which sweet tea would you expect to taste the sweetest?
1M
3M
5 M
2.5M
- 5. Multiple Choice
Kool-Aid - flavoring, coloring, sugar, and water. Identify the solvent.
water
powder
sugar
powder and sugar
- 6. Multiple Choice
How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl?
7.5 mL
15 mL
1333 mL
200 mL
- 7. Multiple Choice
Molarity is ...
grams of solute/deciliters of solvent.
grams of solute/liters of solution.
moles of solute/liters of solution.
moles of solute/milliliters of solvent.
- 8. Multiple ChoiceHow many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?0.625 g NaCl625 g NaCl36.5 g NaCl0.04 mol NaCl
- 9. Multiple Choice
If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?
.188 M
3.78 M
.389 M
1.76 M
- 10. Multiple Choice
How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?
27.8 mL
.278 mL
2.8 mL
278 mL
- 11. Multiple ChoiceWhat volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?150. mL151 mL1.00 L100. mL
- 12. Multiple Choice
If you have a sample of MgCl2 with a mass of 15.0 g, what would need to be the final volume of the solution if you need the concentration to be 0.25 M?
630 mL
0.63 mL
0.039 mL
39 mL
- 13. Multiple Choice
You have been asked to prepare 500 mL of a 2.5 M solution of NaOH. How much NaOH should you measure out before adding water?
10g
100g
50g
80g
- 14. Multiple Choice
What volume of water must be added to 25 mL of a 4.0 mol/L solution of potassium carbonate solution to dilute it to a concentration of 1.6 mol/L?
27.2 mL
29.4 mL
31.5 mL
38.0 mL
- 15. Multiple Choice
Concentrated sulfuric acid (H2SO4) is sold as an 18 mol/L solution. A company uses this concentrated solution to prepare 2.0 L bottles of 0.5 mol/L sulfuric acid. How many 2.0 L bottles can be prepared from each litre of concentrated solution?
27
9
18
36
- 16. Multiple Choice
If the initial volume of the swimming pool was 3.0 x 1010 L of water with a chlorine concentration of 3.2 M what has the concentration become if enough water has dissolved to lower the volume of the pool to 2.67 x 1010 L?
3.6 M
2.8 M
4.2 M
1.7 M
- 17. Multiple Choice
A lab requires 500 mL of HCl with at a concentration of 0.25 M, in the chemical storage you find a large 2.5 L bottle of concentrated HCl at 15 M. What volume of the concentrate should be used to make your final solution?
8.33 mL
50.0 mL
25.0 mL
12.67 mL
- 18. Multiple Choice
You begin with a solution of 400 grams of potassium chloride (KCl) dissolved in 1250 mL of water. If water is added until a new volume of 1662.5 is reached, what is the final molarity of the solution?
3.2 M
4.3 M
5400 M
5.4 M
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