1) Xenon has been shown to form compounds only when it is combined with ________.
A) something with a tremendous ability to remove electrons from other substances
B) another noble gas
C) something with a tremendous ability to donate electrons to other substances
D) an alkali metal
E) an alkaline earth metal
2) In the nuclear transmutation represented by N( n, p)?, what is the emitted
particle?
A) neutron
B) proton
C) positron
D) alpha particle
E) electron
3) At 900.0 K, the equilibrium constant (Kp) for the following reaction is 0.345.
2SO2 + O2 (g) 2SO3 (g)
At equilibrium, the partial pressure of SO2 is 36.9 atm and that of O2 is 16.8 atm. The
partial pressure of SO3 is ________ atm.
A) 88.8
B) 3.89 x 10-3
C) 214
D) 5.57 x 10-4
E) 42.4
4) Of the reactions below, which one is not a combination reaction?
A) C + O2 → CO2
B) 2Mg + O2 → 2MgO
C) 2N2 + 3H2 → 2NH3
D) CaO + H2O → Ca(OH)2
E) 2CH4 + 4O2 → 2CO2 + 4H2O
5) Some things take longer to cook at high altitudes than at low altitudes because
________.
A) water boils at a lower temperature at high altitude than at low altitude
B) water boils at a higher temperature at high altitude than at low altitude
C) heat isn’t conducted as well in low density air
D) natural gas flames don’t burn as hot at high altitudes
E) there is a higher moisture content in the air at high altitude
6) Determining lattice energy from Born-Haber cycle data requires the use of
________.
A) the octet rule
B) Coulomb’s law
C) Periodic law
D) Hess’s law
E) Avogadro’s number
7) The average kinetic energy of the particles of a gas is directly proportional to
________.
A) the rms speed
B) the square of the rms speed
C) the square root of the rms speed
D) the square of the particle mass
E) the particle mass
8) What is the concentration (M) of a NaCl solution prepared by dissolving 9.3 g of
NaCl in sufficient water to give 350 mL of solution?
A) 18
B) 0.16
C) 0.45
D) 27
E) 2.7 x 10-2
9) The secondary structure of a protein is the result of ________ bonding.
A) covalent
B) peptide
C) ionic
D) hydrogen
E) none of the above
10) The most common sulfur ion has a charge of ________.
A) 2-
B) 1-
C) 4+
D) 6+
E) Sulfur does not form ions.
11) Which of the following is not an exact number?
A) the number of seconds in a year
B) the number of millimeters in a kilometer
C) the number of liters in a gallon
D) the number of centimeters in an inch
E) the number of grams in a kilogram
12) Of the following, ________ is a valid statement of Charles’ law.
A) = constant
B) = constant
C) PV = constant
D) V = constant x n
E) V = constant x P
13) The density of NO2 in a 4.77 L tank at 738.4 torr and 45.0 °C is ________ g/L.
A) 1.71
B) 1300
C) 12.1
D) 0.0169
E) 8.17
14) Which one of the following has the element name and symbol correctly matched?
A) S, sodium
B) Tn, tin
C) Fe, iron
D) N, neon
E) B, bromine
15) Which one of the following devices converts radioactive emissions to light for
detection?
A) Geiger counter
B) photographic film
C) scintillation counter
D) radiotracer
E) none of the above
16) How many grams of sodium chloride are there in 550.0 mL of a 1.90 M aqueous
solution of sodium chloride?
A) 61.1
B) 1.05
C) 30.5
D) 6.11 x 104
E) 122
17) Calculate the molality of a 10.0% (by mass) aqueous solution of hydrochloric acid.
A) 3.32 m
B) 121 m
C) 1.10 m
D) 1.66 m
E) The density of the solution is needed to solve the problem.