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Chemistry 116: General Chemistry
Syracuse University Project Advance
Exam #4, Spring 2004
Name
Date
The last page of this examination is a periodic table
(1)
Alpha rays are
(a)
(b)
(c)
(d)
(e)
(2)
The sum of the masses of two hydrogen atoms (mass number 1) and two neutrons is 4.0330.
Why does this differ from the mass of a helium atom (4.0026)?
(a)
(b)
(c)
(d)
(e)
(3)
extremely penetrating light quanta.
electrons from the nucleus.
electrons from outside the nucleus.
helium molecules.
helium +2 ions
Some hydrogen atoms are heavier than others.
The difference is the binding energy of the helium nucleus.
The difference is the experimental error in the measurement of the masses.
Because free neutrons have a very brief existence, we cannot measure heir
mass directly and must use an average value which doesn’t fit every individual
case accurately.
Since there is nothing in common between the helium atom and the hydrogen
atom, there is no reason to expect the agreement.
Which fundamental particle is a product of the following nuclear reaction:
45Sc
21
(a)
(b)
(c)
(d)
(e)
(4)
+ 4He2 ------>
48Ti
22
+ ?
deuteron
positron
proton
neutron
electron
In the nucleus of an atom of atomic number 82 and mass of 206 there are
(a)
(b)
(c)
(d)
(e)
CHE 116
82 neutrons
82 protons
124 electrons
206 neutrons
124 protons
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Spring 2003 Exam #4
(5)
A thyroid patient was given a microcurie of radioactive technetium (half-life 6.0 hours) at 9:00
AM one morning. How many microcuries of activity was still in his body at 9:00 AM next
morning?
(a)
(b)
(c)
(d)
(e)
(6)
The half-life of 14C is 5570 years and living things in equilibrium with the atmosphere
averaged 15.3 count/min. g of C. With which of the following eras would you associate an
axe handle which had a 14C activity of 4.0 count/min. g?
(a)
(b)
(c)
(d)
(e)
(7)
1/16
1/4
1/8
0
6/9
Middle ages (1100 AD)
Roman Era (200 BC)
Age of the Pharaohs (3000 BC)
Pre-history (9000 BC)
Cave Man (30000 BC)
Calculate the amount of energy (MeV) evolved in the fission of uranium-235 according to the
equation:
235U
92
------>
90Sr
38
+
144Ce
58
+ 1n0 + 4 0e-1
nuclear masses in atomic mass units:
235U
92
90Sr
38
144Ce
58
1n
0
0e
-1
234.9934
89.8864
143.8816
1.0087
0.00055
[conversion factor for E = mc2 is 931 MeV/amu]
(a)
(b)
(c)
(d)
(e)
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146.5 MeV
286.4 MeV
59.3 MeV
199.8 MeV
309.1 MeV
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Spring 2003 Exam #4
(8)
The rate at which a radioactive nuclide decays depends upon
(a)
(b)
(c)
(d)
(e)
(9)
The half-life for beta decay of strontium-90 is 28.8 years. A milk sample is found to contain
10.3 ppm strontium-90. How many years would pass before the strontium-90 concentration
would drop to 1.0 ppm?
(a)
(b)
(c)
(d)
(e)
(10)
(11)
temperature
pressure
state of chemical combination
all of the above
none of the above
92.3
0.112
186
96.9
131
Radium undergoes alpha decay. The product of this reaction also undergoes alpha decay.
What is the product of this second decay reaction?
(a)
Po
(b)
Rn
(c)
U
(d)
Th
(e)
Pa
The missing product from the reaction shown below combines with oxygen to form a
compound with the formula
42K
19
(a)
(b)
(c)
(d)
(e)
(12)
------> 0e-1 +
M2 O
MO
MO2
M2O3
M3O2
The reaction shown below is an example of
210Po
84
(a)
(b)
(c)
(d)
(e)
CHE 116
------>
206Pb
82
decay.
+
alpha
beta
gamma
positron
electron capture
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Spring 2003 Exam #4
(13)
Ozone is an important component in the Earth’s atmosphere that protects the surface from
ultraviolet radiation. The chemical formula for ozone is
(a)
(b)
(c)
(d)
(e)
(14)
Selenium is classified as a
(a)
(b)
(c)
(d)
(e)
(15)
metal
non-metal
metalloid
semi-metal
superconductor
What is the anhydride on H2SO4?
(a)
(b)
(c)
(d)
(e)
(16)
O
O2
O3
O4
H2O2
HSO3
SO4-2
SO3
SO2
S2O42-
Give the IUPAC name for the compound shown below.
H2
C
H 3C
H2
C
CH
H2
C
C
H2
CH3
OH
(a)
(b)
(c)
(d)
(e)
(17)
3-hexanal
5-heptanol
3-heptanal
3-heptanol
5-hexanol
A straight chain alkyne has eight carbon atoms. Its molecular formula is
(a)
(b)
(c)
(d)
(e)
CHE 116
C8H8
C8H12
C8H14
C8H16
C8H18
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Spring 2003 Exam #4
(18)
Which is the correct structure for para-dihydroxybenzene?
OH
OH
OH
A
C
OH
E
OH
OH
OH
OH
OH
D
B
OH
(19)
The structure of the male hormone, testosterone, is shown below. Testosterone contains
CH 3
CH 3
OH
H
H
H
O
(a)
(b)
(c)
(d)
(e)
(20)
The functional group of an alkene consists of
(a)
(b)
(c)
(d)
(e)
(21)
an aldehyde and an alcohol
a carboxylic acid and a ketone
an ether and an amine
an alcohol and a ketone
an aldehyde and a ketone
2  bonds
1  bond and 1  bond
2  bonds
2  bonds and 1  bond
3  bonds
The monomer used to make the following polymer, in the presence of an initiator peroxide (RO-O-R), is
R
O
(CH2
CH)n
O
R
CH3
(a)
(b)
CHE 116
CH2=C=CH2
CH3-CH3
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Spring 2003 Exam #4
(c)
(d)
(e)
(22)
CH2=CHCH3
CH3CH2CH3
CH2=HCN
Which one of the following structures is incorrect?
H
O
H
C
O
H
A
C
C
C
O
C
H
H
B
H
Cl
H
O
N
C
C
H
H
H
C
C
E
H
Br
O
H
D
CH3
A
C
OH
B
H3C
C
H2
C
H2
C
OH
H3C
C
H2
CH3
H
C
OH
CH3
D
H2C
OH
E
H
C
CH2
OH
OH
OH
C
H2
C
H2
OH
All of the following can exist in two or more isomeric forms (structural, geometric or optical)
except
(a)
(b)
(c)
(d)
(e)
(25)
Br
Which one of the following alcohols is a tertiary alcohol?
H3C
(24)
H
C
H
H
(23)
H
C
H
H
H
H
H
C4H10
C3H7Cl
C2H2Cl2
C2HCl3
C3H6
The correct IUPAC name for the compound shown below is
CH3
H 3C
H
C
C
H
C
H2
C
H2
C
H2
CH3
CH3
(a)
(b)
(c)
(d)
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2,3-dimethylhexane
2,3-dimethylheptene
3,4-dimethylheptane
2,3-dimethylheptane
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Spring 2003 Exam #4
(e)
(26)
5,6-dimethylheptane
The reaction represented by the following equation is called
nC2H4 ------> (-C2H4-)n
(a)
(b)
(c)
(d)
(e)
(27)
saponification
esterification
fermentation
polymerization
functionalization
The polymerization of ethylene (C2H4) to form polyethylene occurs by a(n)
(a)
(b)
(c)
(d)
(e)
CHE 116
addition reaction.
condensation reaction.
copolymerization reaction.
esterification reaction.
transesterification reaction.
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Spring 2003 Exam #4