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What is the bond order of Ne2?
A)0
B)
C)1
D)
E)2
Using the following thermochemical data, calculate DHf° of Tm2O3(s).
2TmCl3(s) + 3H2O(l) --> Tm2O3(s) + 6HCl(g)DH° = 388.1 kJ/mol
2Tm(s) + 3Cl2(g) --> 2TmCl3(s)DH° = -1973.2 kJ/mol
4HCl(g) + O2(g) --> 2Cl2(g) + 2H2O(l)DH° = -202.4 kJ/mol
A)-1888.7 kJ/mol
B)-1787.5 kJ/mol
C)2563.7 kJ/mol
D)-2158.9 kJ/mol
E)1382.7 kJ/mol
Rank the following compounds according to increasing solubility in water.
I.CH3-CH2-CH2-CH3
II.CH3-CH2-O-CH2-CH3
III.CH3-CH2-OH
IV.CH3-OH
A)I < III < IV < II
B)I < II < IV < III
C)III < IV < II < I
D)I < II < III < IV
E)None of these (A-D) is correct.
How many oxygen atoms are present in the formula for
triamminetriaquairon(II)sulfate?
A) 2
B) 3
C) 4
D) 6
E) 7
Given the graph below, what is the boiling point of chloroform at standard pressure?
A)770C
B)340C
C)980C
D)600C
E)The graph does not give that information.
The rate constant k is dependent on
I.the concentration of the reactant
II.the nature of the reactants
III.the temperature
IV.the order of the reaction
A)none of these
B)one of these
C)two of these
D)three of these
E)all of these
How many electrons are transferred in the following reaction when it is balanced in
acidic solution? SO3
2-(aq) + MnO4
-(aq) --> SO4
2-(aq) + Mn2+(aq)
A) 6
B) 2
C) 10
D) 5
E) 3
Consider the following orderings.
I.Na+< Mg2+< Al3+< Si4+
II.Be < Mg < Ca < Sr
III.I < Br < Cl < F
IV.Al < Si < P < Cl
Which of these give(s) a correct trend in ionization energy?
A)III
B)II, IV
C)I, IV
D)I, III, IV
E)none of them
Which of the following atoms has the smallest radius?
A) Sc
B) Ti
C) V
D) Cr
E) Fe
A gas absorbs 825 J of heat and then has 841J of work done upon it. The change in
internal energy of the gas is
A)1666 J
B)16 J
C)-16 J
D)-1666 J
E)none of these
Consider the following specific heats of metals.
MetalSpecific Heat
Zinc0.387 J/(g°C)
Magnesium1.02 J/(g°C)
Iron0.450 J/(g°C)
Silver0.237 J/(g°C)
Lead0.127 J/(g°C)
If the same amount of heat is added to 25.0 g of each of the metals, which are all at the
same initial temperature, which metal will have the highest temperature?
A)Zinc
B)Magnesium
C)Iron
D)Silver
E)Lead
Consider the following reactions:
a) Al3++ 6H2O Al(OH2)6
3+
b) Al(OH2)6
3+ Al(OH)(OH2)5
2++ H+
c) OCl-+ H2O HOCl + OH-
d) CN-+ H+ HCN
e) none of these
Which is associated with the definition of Kb?
A) a
B) b
C) c
D) d
E) e
For the reaction A --> Products, successive half-lives are observed to be 10.0 min and
40.0 min.At the beginning of the reaction, [A] was 0.71 M. The numerical value of the
rate constant is
A)0.069
B)0.14
C)10
D)0.036
E)none of these
Under certain conditions the reaction H2O2 + 3I- + 2H+ --> I3
- + 2H2O occurs by the
following series of steps:
The rate constant k for the reaction would be given by
A)k = k2
B)k = k2k3
C)k = k2K
D)k = k5
E)k = Kk2k3k4k5
The following questions refer to the reaction between nitric oxide and hydrogen
What is the order of this reaction?
A)3
B)2
C)1
D)0
E)cannot be determined from the data
Which of the following metals (M) is mostly likely to form a chloride of the formula
MCl4?
A) Sc
B) Ti
C) Cr
D) Fe
E) Ni
For the complete combustion of 1.000 mole of propane gas at 298 K and 1 atm
pressure, DH° = -2220 kJ/mol. What will be the heat released when 4.13 g of propane is
combusted under these conditions?
A)-208 kJ
B)208 kJ
C)23651 kJ
D)-23651 kJ
E)none of these
