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1) The density of nitric oxide (NO) gas at 0.970 atm and 34.9 °C is ________ g/L.
A) 0.0384
B) 0.869
C) 1.15
D) 0.339
E) 10.2
2) The correct name for H2SO3 is ________.
A) sulfuric acid
B) sulfurous acid
C) hydrosulfuric acid
D) hydrosulfic acid
E) sulfur hydroxide
3) Diamagnetic solids ________.
A) have atoms with one or more unpaired electrons
B) have atoms with randomly oriented magnetic moments
C) show very slight magnetic character when placed in a magnetic field
D) have atoms with strongly aligned electrons when placed in a magnetic field
E) both a and d
4) What is the most common geometry found in five-coordinate complexes?
A) trigonal bipyramidal
B) octahedral
C) tetrahedral
D) linear
E) icosahedral
5) What are the principal organs that regulate the pH of the carbonic acid-bicarbonate
buffer system in the blood?
A) kidneys, liver
B) lungs, kidneys
C) spleen, liver
D) lungs, skin
E) brain stem, heart
6) Of the choices below, which one is not an ionic compound?
A) PCl5
B) MoCl6
C) RbCl
D) PbCl2
E) NaCl
7) What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be
diluted to
185.6 mL to make a 3.23 M solution of sodium hydroxide?
A) 99.9
B) 3600
C) 287
D) 0.104
E) 0.0100
8) What is the molar solubility of silver carbonate (Ag2CO3) in water? The
solubility-product constant for Ag2CO3 is 8.1 x 10-12 at 25 oC.
A) 1.4 x 10-6
B) 2.0 x 10-4
C) 4.0 x 10-6
D) 1.3 x 10-4
E) 2.7 x 10-12
9) The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of
0.125 M HCl is ________.
A) 6.29
B) 7.00
C) 8.11
D) 5.78
E) 0.00
10) The pressure exerted by 1.0 mol of gas in a 13 L flask at 22 °C is ________ kPa.
A) 560
B) 190
C) 18
D) 2.4
E) 1.0
11) A 1.36-g sample of magnesium nitrate, Mg(NO3)2, contains ________ mol of this
compound.
A) 2.32
B) 1.65
C) 0.111
D) 0.0182
E) 0.00917
12) A sample of potassium nitrate (49.0 g) is dissolved in 101 g of water at 100 oC, with
precautions taken to avoid evaporation of any water. The solution is cooled to 30.0 oC
and a small amount of precipitate is observed. This solution is ________.
A) hydrated
B) placated
C) saturated
D) unsaturated
E) supersaturated
13) In which of the following aqueous solutions would you expect PbCl2 to have the
lowest solubility?
A) 0.020 M BaCl2
B) 0.020 M Pb(NO3)2
C) 0.020 M NaCl
D) 0.020 M KCl
E) pure water
14) As successive electrons are removed from an element, the ionization energy
________.
15) What is the source of the tremendous energies produced by nuclear reactions?
16) Write the balanced equation for the reaction of elemental fluorine with liquid water.
17) What is meant by the term "composite"?
18) Which element in Group IA is the most electropositive?
19) Write the correctly balanced equation for the reaction between elemental iodine and
sodium bromide.
20) What is the mechanism used in humans to combat blood bacterial growth via
deprivation of iron?
21) A covalent bond in which overlap regions lie above and below an internuclear axis
is called a(n) ________.
22) Control rods in a nuclear reactor are composed of boron and ________.
