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- 1. Multiple Choice
What is the concentration of an aqueous solution that contains 1.5 moles of NaCl in 500 milliliters of this solution?
0.30 M
0.75 M
3.0 M
7.5 M
- 2. Multiple Choice
What is the molarity of a solution that contains 0.500 mole of KNO3 dissolved in 0.500-liter of solution?
1.00 M
2.00 M
0.50 M
4.00 M
- 3. Multiple Choice
Which expression could represent the concentration of a solution?
3.5g
3.5M
3.5mL
3.5mol
- 4. Multiple Choice
The molarity of an aqueous solution of NaCl is defined as the
grams of NaCl per liter of water
grams of NaCl per liter of solution
moles of NaCl per liter of water
moles of NaCl per liter of solution
- 5. Multiple Choice
What is the molarity of 1.5 liters of an aqueous solution that contains 52 grams of lithium fluoride, LiF, (gram-formula mass = 26 grams/mole)?
1.3 M
2.0 M
3.0 M
0.75 M
- 6. Multiple Choice
Which unit can be used to express solution concentration?
J/mol
L/mol
mol/L
mol/s
- 7. Multiple Choice
What is the molarity of a solution containing 20 grams of NaOH in 500 milliliters of solution?
1 M
2 M
0.04 M
0.5M
- 8. Multiple Choice
How many moles of solute are contained in 200 milliliters of a 1 M solution?
1
0.2
0.8
200
- 9. Multiple Choice
Which preparation produces a 2.0 M solution of C6H12 O6? [molecular mass = 180.0]
90.0 g of C6H12O6 dissolved in 500.0 mL of solution
90.0 g of C6H12O6 dissolved in 1000. mL of solution
180.0 g of C6H12O6 dissolved in 500.0 mL of solution
180.0 g of C6H12O6 dissolved in 1000. mL of solution
- 10. Multiple Choice
What is the total number of moles of solute in 2.0 liters of 3.0 M NaOH?
1.0 mole
2.0 mole
3.0 mole
6.0 mole
- 11. Multiple Choice
Parts per million is used to express the
atomic mass of an element
concentration of a solution
volume of a substance
rate of heat transfer
- 12. Multiple Choice
A 2400.-gram sample of an aqueous solution contains 0.012 gram of NH3. What is the concentration of NH3 in the solution, expressed as parts per million?
5.0 ppm
15 ppm
20. ppm
50. ppm
- 13. Multiple Choice
Which unit can be used to express the concentration of a solution?
L/s
J/g
ppm
kPa
- 14. Multiple Choice
What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million?
0.005 g
0.05 g
0.5 g
5 g
- 15. Multiple Choice
What is the concentration of O2(g), in parts per million, in a solution that contains 0.008 gram of O2 (g) dissolved in 1000. grams of H2O(l)?
0.8 ppm
8 ppm
80. ppm
800.ppm
- 16. Multiple Choice
If 0.025 gram of Pb(NO3)2 is dissolved in 100. grams of H2O, what is the concentration of the resulting solution, in parts per million?
2.5 ppm
2.5 × 10–4 ppm
250 ppm
4.0 × 103ppm
- 17. Multiple Choice
What is the concentration of a solution, in parts per million, if 0.02 gram of Na3PO4 is dissolved in 1000 grams of water?
20. ppm
2 ppm
0.2 ppm
0.02 ppm
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