1) The vapor pressure of pure water at 25 oC is 23.8 torr. What is the vapor pressure
(torr) of water above a solution prepared by dissolving 18.0 g of glucose (a
nonelectrolyte, MW = 180.0 g/mol) in 95.0 g of water?
A) 24.3
B) 23.4
C) 0.451
D) 0.443
E) 23.8
2) The correct name for Mg(ClO3)2 is ________.
A) magnesium chlorate
B) manganese chlorate
C) magnesium chloroxide
D) magnesium perchlorate
E) manganese perchlorate
3) Most explosives are compounds that decompose rapidly to produce ________
products and a great deal of ________.
A) gaseous, gases
B) liquid, heat
C) soluble, heat
D) solid, gas
E) gaseous, heat
4) Which type of radioactive decay results in no change in mass number and atomic
number for the starting nucleus?
A) alpha
B) beta
C) positron emission
D) electron capture
E) gamma
5) One difference between first- and second-order reactions is that ________.
A) the half-life of a first-order reaction does not depend on [A]0; the half-life of a
second-order reaction does depend on [A]0
B) the rate of both first-order and second-order reactions do not depend on reactant
concentrations
C) the rate of a first-order reaction depends on reactant concentrations; the rate of a
second-order reaction does not depend on reactant concentrations
D) a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed
E) None of the above are true.
6) Ethanol melts at -114 oC and boils at 78 oC at a constant pressure of 1 atm. What
state of matter must a sample of ethanol be in at 0oC and 1 atm?
A) liquid
B) gas
C) solid
D) solid and liquid in equilibrium
E) liquid and gas in equilibrium
7) Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is
more active than nickel but less active than iron. Which of the following correctly lists
the elements in order of increasing activity?
A) Co < Ni < Fe < Zn < Al
B) Ni < Fe < Co < Zn < Al
C) Ni < Co < Fe < Zn < Al
D) Fe < Ni < Co < Al < Zn
E) Zn < Al < Co < Ni < Fe
8) The sp2 atomic hybrid orbital set accommodates ________ electron domains.
A) 2
B) 3
C) 4
D) 5
E) 6
9) The ground-state configuration of fluorine is ________.
A) [He]2s22p2
B) [He]2s22p3
C) [He]2s22p4
D) [He]22s22p5
E) [He]2s22p6
10) What is required for a nuclear transmutation to occur?
A) very high temperature
B) a corrosive environment
C) a particle to collide with a nucleus or neutron
D) spontaneous nuclear decay
E) gamma emission
11) The concentration of which greenhouse gas has increased steadily over the last few
decades?
A) H2O
B) CO
C) CO2
D) H2O2
E) O2
12) A mole of red photons of wavelength 725 nm has ________ kJ of energy.
A) 2.74 X 10-19
B) 4.56 X 10-46
C) 6.05 X 10-3
D) 165
E) 227