Solution Concentration

Solution Concentration

Assessment

Assessment

Created by

Jay Sleichter

Science

9th Grade

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10 questions

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1.

Multiple Choice

5 mins

1 pt

Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water

30

25

20

15

2.

Multiple Choice

5 mins

1 pt

What mass of solute is needed to make 75.0 g of a 3.4% solution?

2.55 g

22 g

0.05 g

3.

Multiple Choice

5 mins

1 pt

What 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 Choice

5 mins

1 pt

Brass 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?

2.3

10.1

7.6

4.9

5.

Multiple Choice

5 mins

1 pt

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

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