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1) The elements in the ________ period of the periodic table have a core-electron
configuration that is the same as the electron configuration of neon.
A) first
B) second
C) third
D) fourth
E) fifth
2) The conjugate acid of HSO4
- is ________.
A) SO4
2-
B) H2SO4
C) HSO4
+
D) H+
E) HSO3
+
3) The cumulative result of carbon dioxide, methane, and ozone in the troposphere on
atmospheric temperatures is referred to as ________.
A) acid rain
B) the greenhouse effect
C) photoionization
D) photochemical smog
E) photodissociation
4) Which one of the following represents an impossible set of quantum numbers for an
electron in an atom? (arranged as n, l, ml, and ms)
A) 4, 3, 0, 0
B) 4, 3, -3, 1/2
C) 4, 3, 3, -1/2
D) 4, 3, 0, +1/2
E) 4, 2, -2, -1/2
5) Which one of the following requires a particle accelerator to occur?
A) Fe --> Co + e
B) Co + n --> Co
C) U + n --> Np + e
D) Pu + He --> Cm + n
E) none of the above
6) For a given substance that exhibits liquid-crystalline properties, the transition from
solid to liquid-crystal state occurs ________.
A) over a range of temperatures between the melting point of the solid and the boiling
point of the liquid
B) at the melting point of the solid
C) over a range of temperatures that includes the melting point of the solid
D) at a well-defined temperature above the melting point of the solid
E) at a well-defined temperature below the melting point of the solid
7) The concentration of urea (MW = 60.0 g/mol) in a solution prepared by dissolving 16
g of urea in 39 g of H2O is ________ molal.
A) 96
B) 6.8
C) 0.68
D) 6.3
E) 0.11
8) Kb for NH3 is 1.8 x 10-5. What is the pH of a 0.40 M aqueous solution of NH4Cl at
25.0 oC?
A) 2.57
B) 11.43
C) 9.18
D) 4.82
E) 11.23
9) The spectator ions in the reaction between aqueous hydrochloric acid and aqueous
ammonia are ________.
A) H+ and NH3
B) H+, Cl-, NH3, and NH4
+
C) Cl- and NH4
+
D) H+, Cl-, and NH4
+
E) Cl- only
10) Which noble gas is known to form a variety of binary compounds?
A) Xe
B) He
C) Ne
D) Ar
E) Kr
11) The electron domain and molecular geometry of SO3 are ________.
A) trigonal bipyramidal, trigonal planar
B) trigonal planar, bent
C) trigonal bipyramidal, T-shaped
D) trigonal planar, trigonal planar
E) octahedral, seesaw
12) Components of AirMole Fraction
Nitrogen 0.781
Oxygen 0.209
Argon 0.010
What is the partial pressure or nitrogen (in torr) in the atmosphere when the
atmospheric pressure is 760.0 torr?
A) 159
B) 594
C) 611
D) 7.60
E) 760
13) The formula of bromic acid is ________.
A) HBr
B) HBrO4
C) HBrO
D) HBrO3
E) HBrO2
14) For resonance forms of a molecule or ion, ________.
A) one always corresponds to the observed structure
B) all the resonance structures are observed in various proportions
C) the observed structure is an average of the resonance forms
D) the same atoms need not be bonded to each other in all resonance forms
E) there cannot be more than two resonance structures for a given species
