Chemistry 116: General Chemistry
Syracuse University Project Advance
Spring 2009 Exam #4
Name
Date
1. The bombardment of
The other product is
A.
14
6C
B.
13
6C
C.
14
8N
D.
14
6N
E.
14
8N
2. The decay of
A.
B.
C.
D.
E.
85
36 Kr
to
14
7N
with 10 n nuclei gives two products, one of which is 11 H.
________.
85
37 Rb
occurs through the emission of a(n) ________.
alpha particle
beta particle
neutron
proton
positron
3. Radionuclides which have too low of a neutron/proton ratio generally decay through
________.
A.
B.
C.
D.
E.
beta emission
electron capture or positron emission
gamma ray emission
alpha emission
neutron absorption
4. How many neutrons does
A.
B.
C.
D.
E.
21
23
25
46
67
46
21
Sc have?

CHE 116 Spring 2009 Exam #4
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5. Identify the missing product in the following nuclear reaction:
238
92

U   _______ + 42 He
A.
B.
C.
D.
E.
242
94
234
90
242
90
234
92
232
92
A.
B.
C.
D.
E.
47.6 h
53.4 h
58.0 h
63.0 h
71.2 h
Pu
Th
Th
U
U





6. Analysis of a 4.50-mg sample of a newly discovered isotope showed that only 3.25

mg of the isotope remained after 29.6 h. What is the half-life of the isotope?
7. An atom with 15 protons and 18 neutrons is an isotope of
A.
B.
C.
D.
E.
argon
arsenic
chlorine
phosphorus
sulfur
8. The nuclide symbol -10 e represents a(n)
A.
B.
C.
D.
E.
electron
proton
neutron
positron
gamma photon
9. A positron has the same mass as
A.
B.
C.
D.
E.
a gamma ray
a neutron
an alpha particle
a proton
a beta particle
CHE 116 Spring 2009 Exam #4
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10. When 235
92 U is bombarded with one neutron, fission occurs. The products are two
neutrons, 144
55 Cs , and
 A.
B.

C.
D.

E.

139
56
90
37
143
55
89
37
94
36
Ba
Rb
Cs
Rb
Kr


11. The radiation that has the highest penetration power is

A.
B.
C.
D.
E.
gamma.
beta.
positron.
X-ray.
alpha.
12. The total number of protons and neutrons in the nuclide 37Cl is
(a)
(b)
(c)
(d)
(e)
54
37
20
17
35.45
13. The nuclear reaction
(a)
(b)
(c)
(d)
(e)
14
6C
------>
14
7N
+
0
-1 e
is an example of
nuclear fusion
nuclear fission
natural transmutation
artificial transmutation
none of the above
14. In 6.20 hours, a 100 gram sample of an isotope decays to 25.0 grams. What is the
half-life, in hours, of this isotope?
(a)
(b)
(c)
(d)
(e)
1.6
3.1
6.2
12.4
18.6
CHE 116 Spring 2009 Exam #4
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15. The main purpose of a moderator in a fission reactor is to
(a)
(b)
(c)
(d)
(e)
emit neutrons
absorb neutrons
slow down neutrons
speed up neutrons
create neutrons
16. In a first-order reaction the half-life is 11.6 minutes. The rate constant, k, in s-1 is
(a)
(b)
(c)
(d)
(e)
1 x 10-3
1 x 10-4
700
1000
2000
17. Atoms with a given number of protons, but with a different number of neutrons are
called
(a) Isomers
(b) Isotones
(c) Isotopes
(d) Isochrones
(e) Ionofores
18. Which equation is an example of artificial transmutation?
(a)
238
92U
------> 42He +
(b)
27
(c)
14
(d)
226
88Ra
13Al
6C
+
4
2He
------>
14
------>
234
90Th
30
15P
------>
7N
4
+
2He
0
+
1
0n
-1e
+
222
86Ra
19. Fissionable uranium-233, uranium 235, and plutonium-239 are used in nuclear
reactors as
(a) coolants
(b) control rods
(c) moderators
(d) fuels
CHE 116 Spring 2009 Exam #4
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20. Which reaction illustrates fusion?
(a)
2
+
2
(b)
1
+
27
(c)
27
13Al
+
(d)
14
1H
0n
7N
+
1H
------>
13Al
2He
------>
4
2He
4
2He
4
24
11Na
+
4
30
15P
+
1
0n
------>
------>
1
1H
2He
+ 178O
21. The nuclear equation:
14
7N
+
1
0n
-------->
14
6C
+ ?
can be balanced by adding to the right side
(a) one proton
(b) one gamma
(c) one positron
(d) one electron
(e) one alpha
22. What happens to the mass number and the atomic number of an element when it
undergoes beta decay?
A) neither the mass number nor the atomic number change.
B) the mass number decreases by 4 and the atomic number decreases by 2
C) the mass number does not change and the atomic number increases by 1
D) the mass number does not change and the atomic number decreases by 2
E) the mass number increases by 2 and the atomic number increases by 1
23. The correct name of the following compound is
O
A.
B.
C.
D.
E.
2-pentaketone
methyl propyl ether
2-quinone
2-pentanone
methyl butanoate
CHE 116 Spring 2009 Exam #4
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24. What is the IUPAC name for the following compound?
H3C
H
C
H2C
A.
B.
C.
D.
E.
CH2
CH
C
H2
CH3
4-ethyl-1-pentene
2-ethyl-4-pentene
4-methyl-1-hexene
3-methyl-5-hexene
2-(2-propenyl)butane
25. Which functional group does NOT contain an oxygen atom?
A.
B.
C.
D.
E.
ketone
alkyne
aldehyde
ester
alcohol
26. The compound
NH2
is classified as a
CH3 CHCH2CH2CH3
A.
B.
C.
D.
E.
primary amide.
secondary amide.
tertiary amide.
secondary amine.
tertiary amine.
27. How many hydrogen atoms are needed to complete the following hydrocarbon
structure?
A.
B.
C.
D.
E.
C
C
C
C
4
5
6
8
10
CHE 116 Spring 2009 Exam #4
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28. While alkenes and alkynes readily undergo
hydrocarbons do not. Instead they undergo
A.
B.
C.
D.
E.
reactions, aromatic
reactions.
addition, substitution
elimination, substitution
substitution, elimination
substitution, addition
addition, elimination
29. List, in order (i) through (iv), the functional group for each of the following
compounds:
(i)
CH3
O CH2CH2CH3
(iii)
HO
H
(ii)
1.
2.
3.
4.
CH3
N
C CH2CH3
O
amide
aldehyde
alcohol
carboxylic acid
(a)
(b)
(c)
(d)
(e)
(iv)
5. ester
6. ketone
7. ether
2, 1, 3, 7
7, 2, 3, 6
7, 1, 4, 2
5, 6, 4, 2
3, 1, 5, 2
30. The IUPAC name for the compound shown below
CH3CH2
H
(a)
(b)
(c)
(d)
(e)
C C
CH2CH3
H
is cis-3-hexene.
is trans-3-hexene
is trans-3-hexyne
is cis-3-hexyne
is none of the above
CHE 116 Spring 2009 Exam #4
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H
O
C CH2 CH3
O
C CH2CH3
31. Which of the following compounds has the greatest possible number of isomers?
(a)
(b)
(c)
(d)
(e)
butane
ethane
pentane
propane
methane
32. Which compound can exist as cis and trans isomers?
(a)
(b)
(c)
(d)
(e)
1,1-dibromomethane
1,2-dibromoethene
1,1,2-tribromoethene
1-bromo-1-chloroethene
1-butene
33. Which one of the following could be a cyclic alkane?
A)
B)
C)
D)
E)
C5H5
C3H6
C4H6
C2H6
C9H20
34. The addition of HBr to 2-butene produces
A)
B)
C)
D)
E)
1-bromobutane
2-bromobutane
1,2-dibromobutane
2,3-dibromobutane
no reaction is observed
35. The empirical formula of an addition polymer is
A.
B.
C.
D.
E.
the same as the empirical formula of its monomer.
the empirical formula of its monomer less 2H.
the empirical formula of its monomer less 2H and O.
the empirical formula of its monomer plus 2H.
the empirical formula of its monomer plus 2H and O.
CHE 116 Spring 2009 Exam #4
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36. The monomer unit for polypropylene is propene. What is the formula for the
repeating unit of this polymer?
CH3
(a)
C
H2
(d)
C
H2
C
C
H
C
F2
C
F2
CH3
(b)
C
H
(e)
C
H
CH3 CH3
(c)
C
H
C
H
37. The polymerization of ethylene (C2H4) to form polyethylene occurs by a(n)
(a)
(b)
(c)
(d)
(e)
addition reaction.
condensation reaction.
copolymerization reaction.
esterification reaction.
transesterification reaction.
CHE 116 Spring 2009 Exam #4
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