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topic 7.2 solution concentration: percent by mass

Authored by Tania Murphy

Chemistry

10th Grade

Used 2+ times

topic 7.2 solution concentration: percent by mass
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

___________ refers to the amount of solute dissolved in a given amount per volume of solution

Concentration

Dilution

Precipitation

None of the above

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?

10.0 %

11.1 %

80.0 %

20.0 %

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What mass of water should be added to 22.0 g of KCl to make 5.50% by mass solution?

400 g

40 g

378 g

25 g

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the percent concentration of sugar in pink lemonade if 28 g of sugar is added to 209 g of water?

14.7 %

5.14 %

13.4 %

8.47 %

11.8 %

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams of NaNO3 are needed to prepare 100 g of 15.0 % by mass NaNO3 solution? (MM = 85 g/mol)

15 g

1275 g

12.75 g

150 g

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams of solvent are in a 200.0mL solution thta is 6.50% by mass .

13.0g

187g

200.g

213g

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams of solute must be added to 250.0 mL of solution to make a 15.5% solution?

38.8g

212g

250g

15.5g

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