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1) Which one of the following exhibits dipole-dipole attraction between molecules?
A) NH3
B) CF4
C) C10H22
D) O2
E) SF6
2) In the Haber process, ammonia is synthesized from nitrogen and hydrogen:
N2 (g) + 3H2 (g) --> 2NH3 (g)
G o at 298 K for this reaction is -33.3 kJ/mol. The value of G at 298 K for a reaction
mixture that consists of 1.9 atm N2, 2.3 atm H2, and 0.85 atm NH3 is ________.
A) -1.0
B) -4.09 x 103
C) -8.62 x 103
D) -118.0
E) -41.9
3) With which of the following will the ammonium ion form an insoluble salt?
A) chloride
B) sulfate
C) carbonate
D) sulfate and carbonate
E) none of the above
4) The basic building block of nucleic acids is the ________.
A) nucleoside
B) nucleotide
C) ester linkage
D) nitrogen base
E) phosphoric acid
5) The molecular weight of a gas that has a density of 5.75 g/L at STP is ________
g/mol.
A) 3.90
B) 129
C) 141
D) 578
E) 1.73 x 10-3
6) Magnesium burns in air with a dazzling brilliance to produce magnesium oxide:
2Mg (s) + O2 (g) → 2MgO (s)
When 5.50 g of magnesium burns, the theoretical yield of magnesium oxide is
________ g.
A) 5.50
B) 9.12
C) 0.226
D) 4.56
E) 18.2
7) The density of N2O at 1.53 atm and 45.2 °C is ________ g/L.
A) 18.2
B) 1.76
C) 0.388
D) 9.99
E) 2.58
8) The most common isotope of hydrogen is sometimes referred to as ________.
A) deuterium
B) protium
C) tritium
D) heavy hydrogen
E) common hydrogen
9) What mass (g) of barium iodide is contained in 188 mL of a barium iodide solution
that has an iodide ion concentration of 0.532 M?
A) 19.6
B) 39.1
C) 19,600
D) 39,100
E) 276
10) Using the data in the table, which of the conjugate bases below is the strongest
base?
A) OAc-
B) C7H5O2
-
C) NO2
-
D) F-
E) OAc- and C7H5O2
-
11) The correct result (indicating the proper number of significant figures) of the
following addition is ________.
12
1.2
0.12
+ 0.012
A) 13
B) 13.3
C) 13.33
D) 13.332
E) none of the above
12) In a ground-state copper atom, the ________ subshell is partially filled.
A) 3s
B) 4s
C) 4p
D) 3d
E) 4d
13) A substance that is capable of acting as both an acid and as a base is ________.
A) autosomal
B) conjugated
C) ambiprotic
D) saturated
E) miscible
14) EDTA is ________-dantate ligand.
A) mono
B) bi
C) tri
D) tetra
E) hexa
