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Understanding Chemical Formulas
By Donald LaMarr
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Last updated almost 8 years ago
31 questions
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Note from the author:
Counting the number of atoms in a chemical formula
Calculate the individual and total number of atoms in each of the following chemical formulas.
Hint: Treat coefficients like the distributive property and subscripts like exponents.
0
1
1
1
0
1
1
1
1
1
0
1
1
1
1
4Si(HCO
3
)
4
1
1
1
1
1
2HNO
3
1
1
1
1
KMnO
4
1
1
1
1
8K
2
SO
4
1
1
1
Question 1
1.
NaCl (use this space to show any work)
visibility
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Question 2
2.
Na-
Question 3
3.
Cl-
Question 4
4.
Total number of atoms
Question 5
5.
4Al(C2H3O2)3 (use this space to show any work)
visibility
View drawing
Question 6
6.
Al-
Question 7
7.
H-
Question 8
8.
C-
Question 9
9.
O-
Question 10
10.
Total number of atoms
Question 11
11.
6H2SO4 (use this space to show any work)
visibility
View drawing
Question 12
12.
H-
Question 13
13.
S-
Question 14
14.
O-
Question 15
15.
Total number of atoms
Question 16
16.
Si-
Question 17
17.
H-
Question 18
18.
C-
Question 19
19.
O-
Question 20
20.
Total number of atoms
Question 21
21.
H-
Question 22
22.
N-
Question 23
23.
O-
Question 24
24.
Total number of atoms
Question 25
25.
K-
Question 26
26.
Mn-
Question 27
27.
O-
Question 28
28.
Total number of atoms
Question 29
29.
K-
Question 30
30.
S-
Question 31
31.
O-