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- 1. Multiple Choice
Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water
30
25
20
15
- 2. Multiple ChoiceWhat mass of solute is needed to make 75.0 g of a 3.4% solution?2.55 g22 g0.05 g
- 3. Multiple ChoiceWhat is the concentration, in percent by volume, of 15.3 mL of solute in 2.65 L of solution?0.58%0.0058%5.8%
- 4. Multiple ChoiceBrass is a copper-zinc alloy. If the concentration of zinc is relatively low, the brass has a golden color and is often used for inexpensive jewellery. If a 35.0 g pendant contains 1.7 g of zinc, what is the percentage mass by mass of zinc in brass?2.310.17.64.9
- 5. Multiple Choice
What mass, in grams, of sodium sulfate is needed to make 275 g total of a 1.5% aqueous solution of sodium sulfate?
6.0
7.5
4.1
2.2
- 6. Multiple Choice
Concentration is
the amount of solute in the solvent
the amount of solvent in the solute
density
particle size
- 7. Multiple Choice
Which solution is more concentrated?
Solution 1:
500 mL of water
100 g of salt
Solution 2:
500 mL of water
90 g of salt
Solution 1
Solution 2
They have the same concentration
I have no idea
- 8. Multiple Choice
Which solution is more concentrated?
Solution 1:
20 mL of water
5 g of salt
Solution 2:
20 mL of water
10 g of salt
Not enough information to tell
Solution 1
Solution 2
They are equally concentrated
- 9. Multiple Choice
In order to dilute a solution, you need to
add more of the solid
add more water
find the mass
find the volume
- 10. Multiple Choice
Which solution is more diluted?
Solution 1:
1000 mL of water
60g of salt
Solution 2:
500 mL of water
60 g of salt
Not enough information to tell
Solution 1
Solution 2
They are equally diluted
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