Answers to Workbook Exercises
Excercise 3
a. 2.9 x 10-14 g
b. 0.11 mol
c. 1.35 x 1024 molecules
d. 7.3 x 10-23 g
e. 6.0 x 1015 atoms
f. 6.0 x 1029 atoms
g. 8.3 x 10-14 mol
Exercise 12
| Symbol |
#p |
#n |
#e |
Charge |
Mass # |
| 37Cl |
17 |
20 |
17 |
0 |
37 |
| 23Na |
11 |
12 |
11 |
0 |
23 |
| 23Na+ |
11 |
12 |
10 |
1+ |
23 |
| 19F- |
9 |
10 |
10 |
1- |
19 |
| 12C |
6 |
6 |
6 |
0 |
12 |
| 14C |
6 |
8 |
6 |
0 |
14 |
| 14O2- |
8 |
6 |
10 |
2- |
14 |
| 19F- |
9 |
10 |
10 |
1- |
19 |
| 24Mg2+ |
12 |
12 |
10 |
2+ |
24 |
| 31P3- |
15 |
16 |
18 |
3- |
31 |
| 43Sc3+ |
21 |
22 |
18 |
3+ |
43 |
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Eden Francis
Clackamas Community College
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