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Moles and % Composition

Last updated almost 5 years ago

20 questions

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Question 1

1.

368 g

184 g

200 g 

130 g

Question 2

2.

3 mol 

4 mol

1 mol 

2 mol 

Question 3

3.

 The molar mas is 103 g

40 % Na 

60 % Br 

77 % Br

22 % Na 

Question 4

4.

1. 2 mol 

0.21 mol 

1 mol 

0. 5 mol 

Question 5

5.

110 g

33 g

12

50 g

Question 6

6.

10 % N 

74 % Mg 

90 % Mg

50 % N 

Question 7

7.

186 g

62 g

200 g

150 g

Question 8

8.

1 mol 

2.4 mol 

1.3 mol 

2 mol 

Question 9

9.

169 g

320 g

69 g

220 g

Question 10

10.

0.002 mol

0.2 mol

0. 02 mol

1.2 mol

Question 11

11.

316 g

474 g

123 g

158 g

Question 12

12.

20 % Cl 

90 % Cl 

All wrong 

80 % Al 

22 % Al 

Question 13

13.

Select all that apply

Electrson are shared 

This is a molecule 

This is an ionic compund 

44 % C

50 % O 

Electrons are transferred

2 % H

Question 14

14.

40 g

80 g

20 g

56 g

Question 15

15.

molar mas = 94 g/mol

34 % O

40 % C

26 % F

This is an ionic compound

Question 16

16.

53 g

63 g

32 g

42 g

Question 17

17.

0.5 mol 

2 mol 

1 mol 

1.5 mol 

Question 18

18.

20 % O

6 % C

85 % Br

This is an ionic compound

Electrons are shared

Question 19

19.

4.2 mol 

3.2 mol 

2.2  mol 

1.2 mol 

Question 20

20.

99 grams

29 g

174 g

58 g