ANSWERS TO REVIEW EXAM IN THE LECTURE NOTES/CHEM 100
1. a
2. d
3. a
4. d
5. c
6. a
7. b
8. e
9. c
10. e
11. a
12. a
13. b
14. e
15. c
16. e
17. c
18. e
19. a
20. c
21. d
22. a
23. a
24. a
25. b
26. b
27. d
28. a (not covered)
29. e (not covered)
30. b

Free Response:
#1:
20M x100cm/1M = 2000M

#2 (data left off the problem: volume of water alone = 15 mL)

D=M/V =20g/5mL = 4g/mL

3. 2 electrons at level 1; 4 electrons at level 2

4. n=6; p=6; e^-=6