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1) The valence shell of the element X contains 2 electrons in a 5s subshell. Below that
shell, element X has a partially filled 4d subshell. What type of element is X?
A) main group element
B) chalcogen
C) halogen
D) transition metal
E) alkali metal
2) An antibonding π orbital contains a maximum of ________ electrons.
A) 1
B) 2
C) 4
D) 6
E) 8
3) The correct name for H2CO3 is ________.
A) carbonous acid
B) hydrocarbonate
C) carbonic acid
D) carbohydrate
E) carbohydric acid
4) The missing product from this reaction is ________.
Fr --> N + _____
A) He
B) e
C) n
D) e
E)
5) Fluorine forms an ion with a charge of ________.
A) 1-
B) 1+
C) 2+
D) 3+
E) 3-
6) The reaction
2NOBr (g) --> 2 NO (g) + Br2 (g)
is a second-order reaction with a rate constant of 0.80 M-1s-1 at 11 oC. If the initial
concentration of NOBr is 0.0440 M, the concentration of NOBr after 6.0 seconds is
________.
A) 0.0276 M
B) 0.0324 M
C) 0.0363 M
D) 0.0348 M
E) 0.0402 M
7) The second law of thermodynamics states that ________.
A) E = q + w
B) H o
rxn = ∑ nH o
f (products) - Σ mH o
f (reactants)
C) for any spontaneous process, the entropy of the universe increases
D) the entropy of a pure crystalline substance is zero at absolute zero
E) S = qrev/T at constant temperature
8) How many grams of phenol (C6H5OH) are contained in 5.50 mol of phenol?
A) 518
B) 0.0584
C) 9.14 x 10-24
D) 3.31 x 1024
E) 94.1
9) Which of the following is not a chelating agent?
A) chloride anion
B) EDTA
C) porphine
D) ethylenediamine
E) oxalate anion
10) The magnitude of Kw indicates that ________.
A) water autoionizes very slowly
B) water autoionizes very quickly
C) water autoionizes only to a very small e xtent
D) the autoionization of water is e xothermic
11) The molecular geometry of the BCl3 molecule is ________, and this molecule is
________.
A) trigonal pyramidal, polar
B) trigonal pyramidal, nonpolar
C) trigonal planar, polar
D) trigonal planar, nonpolar
E) trigonal bipyramidal, polar
12) Atomic radius generally increases as we move ________.
A) down a group and from right to left across a period
B) up a group and from left to right across a period
C) down a group and from left to right across a period
D) up a group and from right to left across a period
E) down a group; the period position has no effect
13) 41Ca decays by electron capture. The product of this reaction undergoes alpha
decay. What is the product of this second decay reaction?
A) Ti
B) Ca
C) Ar
D) Cl
E) Sc
14) Gold has a density of 0.01932 kg/cm3. What is the mass (in kg) of a 92.5 cm3
sample of gold?
A) 1.79
B) 0.560
C) 92.5
D) 0.000209
E) 4790
15) The concentration of Mg in seawater is 0.054 M. How many grams of Mg can be
extracted from 10.0 kg of seawater if the recovery rate is 20.0%?
A) 13.9
B) 6.50
C) 11.3
D) 2.62
E) 5.25
16) Which one of the following is not true concerning cathode rays?
A) They originate from the negative electrode.
B) They travel in straight lines in the absence of electric or magnetic fields.
C) They impart a negative charge to metals exposed to them.
D) They are made up of electrons.
E) The characteristics of cathode rays depend on the material from which they are
emitted.
