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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
6
B
3
C
5
D
2
2) How many hydrogen atoms are in: 2 H2O?
A
5
B
4
C
1
D
2
3) How many water molecules are in: 2 H2O?
A
3
B
4
C
1
D
2
4) How many oxygen atoms are in: 2 LiCO3?
A
10
B
3
C
2
D
6
5) How many lithium atoms are in: 2 LiCO3?
A
2
B
1
C
3
D
4
6) How many carbon atoms are in: 2 LiCO3?
A
1
B
3
C
2
D
4
7) How many oxygen atoms are in: Al2(SO4)3?
A
16
B
10
C
12
D
8
8) How many aluminum atoms are in: Al2(SO4)3?
A
3
B
6
C
1
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
20
D
12
11) How many aluminum atoms are in: 2 Al2(SO4)3?
A
6
B
12
C
4
D
2
12) How many sulfur atoms are in: 2 Al2(SO4)3?
A
10
B
3
C
6
D
8
13) How many TOTAL oxygen atoms are in this entire chemical equation: 2H2 + O2 -- 2H2O
A
3
B
4
C
2
D
6
14) How many sulfate molecules are in: 2 Al2(SO4)3?
A
3
B
6
C
8
D
4
15) How many TOTAL hydrogen atoms are in this entire chemical equation: 2H2 + O2 -- 2H2O
A
10
B
4
C
6
D
8
16) How many TOTAL oxygen atoms are in this entire equation: CH4 + 2O2 -- CO2 + 2H2O?
A
8
B
4
C
12
D
10
17) How many phosphorus atoms are in: 3 (NH4)2 PO4?
A
12
B
1
C
4
D
3
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
12
B
4
C
6
D
8
20) How many oxygen atoms are in: 3 (NH4)2 PO4?
A
12
B
4
C
3
D
16
*select an answer for all questions
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