CEM 392 Test 2

subject Type Homework Help
subject Pages 7
subject Words 495
subject Authors Steven S. Zumdahl, Susan A. Zumdahl

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Which metal, Al or Ni could reduce Zn2+to Zn(s) if placed in a Zn2+(aq) solution?
A) Al
B) Ni
C) Both Al and Ni would work.
D) Neither Al nor Ni would work.
E) Cannot be determined.
Which of the following compounds is expected to have the LOWEST melting point?
A)CH3OCH3
B)CH3CH2OH
C)CH3CH2CH2CH3
D)CH3CH2CH3
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E)CH3Cl
Which of the following is not a fundamental metric unit?
A)meter C)kilogram
B)second D)liter
Which of the following manganese species is likely to be the best oxidizing agent?
A) MnO4
2-(aq)
B) MnO4
-(aq)
C) MnO2(s)
D) Mn2+(aq)
E) Mn(s)
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Which of the following nuclides is most likely to be stable?
A) 41Cl
B) 234Th
C) 3H
D) 221Pb
E) 52Cr
A manometer is attached to a sample of gas that occupies a volume of 2.34 liters. The
mercury level in arm of the manometer attached to the gas sample is 24.3 torr lower
than that of the arm open to the atmosphere. Atmospheric pressure is measured to be
1.23 atm. What is the pressure of the sample of gas?
A)23.1 torr
B)25.5 torr
C)911 torr
D)935 torr
E)959 torr
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The following data were obtained for the reaction, C + D + E --> products. Determine
the units of k.
A)mol/L
B)mol/Ls
C)1/s
D)L/mols
E)L2/mol2s
Balance the following redox equation in basic solution. What is the coefficient of the
hydroxide ion? MnO4
-(aq) + HCOOH(aq) --> Mn2+(aq) + CO2(g)
A) 2
B) 4
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C) 6
D) 8
E) 16
Which of the following molecules or ions does not contain a central atom with
d2sp3hybridization?
A)XeF5
+
B)IF4
-
C)SF6
D)SeF5
-
E)all of these contain a central atom with d2sp3hybridization
Which of the following molecules or ions does not contain a central atom with
sp2hybridization?
A)nitrate
B)ozone
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C)H3O+
D)CH3
+
E)SO2
Which of the following statements is FALSE?
A)sulfur does not conduct electricity
B)gold is malleable
C)germanium is a metal
D)silicon is a metalloid
E)hydrogen is a non-metal
Refer to the galvanic cell below (the contents of each half-cell are written beneath each
compartment):
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The standard reduction potentials are as follows:
What is the oxidation state of Cr in Cr2O7
2-?
A) +7
B) +6
C) +12
D) -1
E) -2

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