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Counting Atoms
Test Description: Counting Atoms
Instructions: Answer all questions to get your test result.
1) How many oxygen atoms are in: 2 H2O?
A
5
B
2
C
6
D
3
2) How many hydrogen atoms are in: 2 H2O?
A
1
B
2
C
4
D
5
3) How many water molecules are in: 2 H2O?
A
1
B
2
C
4
D
3
4) How many oxygen atoms are in: 2 LiCO3?
A
6
B
10
C
3
D
2
5) How many lithium atoms are in: 2 LiCO3?
A
2
B
3
C
4
D
1
6) How many carbon atoms are in: 2 LiCO3?
A
1
B
2
C
3
D
4
7) How many oxygen atoms are in: Al2(SO4)3?
A
8
B
12
C
16
D
10
8) How many aluminum atoms are in: Al2(SO4)3?
A
1
B
3
C
6
D
2
9) How many sulfur atoms are in: Al2(SO4)3?
A
4
B
12
C
6
D
3
10) How many oxygen atoms are in: 2 Al2(SO4)3?
A
24
B
36
C
12
D
20
11) How many aluminum atoms are in: 2 Al2(SO4)3?
A
6
B
4
C
2
D
12
12) How many sulfur atoms are in: 2 Al2(SO4)3?
A
6
B
10
C
3
D
8
13) How many TOTAL oxygen atoms are in this entire chemical equation: 2H2 + O2 -- 2H2O
A
4
B
3
C
6
D
2
14) How many sulfate molecules are in: 2 Al2(SO4)3?
A
4
B
6
C
8
D
3
15) How many TOTAL hydrogen atoms are in this entire chemical equation: 2H2 + O2 -- 2H2O
A
6
B
4
C
8
D
10
16) How many TOTAL oxygen atoms are in this entire equation: CH4 + 2O2 -- CO2 + 2H2O?
A
10
B
8
C
12
D
4
17) How many phosphorus atoms are in: 3 (NH4)2 PO4?
A
1
B
4
C
3
D
12
18) How many hydrogen atoms are in: 3 (NH4)2 PO4?
A
8
B
24
C
12
D
30
19) How many nitrogen atoms are in: 3 (NH4)2 PO4?
A
8
B
4
C
12
D
6
20) How many oxygen atoms are in: 3 (NH4)2 PO4?
A
12
B
3
C
4
D
16
*select an answer for all questions
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