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1) The conjugate base of NH3 is ________.
A) NH2
-
B) NH4
+
C) NH2OH
D) H3O+
E) OH-
2) Of the substances below, the highest fuel value is obtained from ________.
A) charcoal
B) bituminous coal
C) natural gas
D) hydrogen
E) wood
3) The C O bond dissociation energy in CO2 is 799 kJ/mol. The maximum wavelength
of electromagnetic radiation required to rupture this bond is ________.
A) 307 nm
B) 149 nm
C) 248 nm
D) 353 nm
E) 979 nm
4) Calculate the molality of a 10.0% (by mass) aqueous solution of hydrochloric acid.
A) 2.40 m
B) 87.4 m
C) 0.791 m
D) 1.20 m
E) The density of the solution is needed to solve the problem.
5) Of the following substances, only ________ has London dispersion forces as its only
intermolecular force.
A) SiBr4
B) PF3
C) C4H9COOH
D) HCl
E) Cl2O
6) Which periodic table group contains only nonmetals?
A) 8A
B) 2A
C) 6A
D) 7A
E) 5A
7) The de Broglie wavelength of an electron is 8.7 X 10-11 m. The mass of an electron
is 9.1 X 10-31 kg. The velocity of this electron is ________ m/s.
A) 8.4 X 103
B) 1.2 X 10-7
C) 6.9 X 10-5
D) 8.4 X 106
E) 8.4 X 10-3
8) SO2Cl2 decomposes in the gas phase by the reaction
SO2Cl2 (g) --> SO2 (g) + Cl2 (g)
The reaction is first order in SO2Cl2 and the rate constant is 3.0 x 10-6 s-1at 600 K. A
vessel is charged with 3.6 atm of SO2Cl2 at 600 K. The partial pressure of SO2Cl2 at
3.0 x 105 s is ________ atm.
A) 0.85
B) 3.2
C) 1.5
D) 0.19
E) 9.3 x 104
9) Which one of the following is produced by anaerobic bacteria after decomposing
biodegradable nitrogen-containing waste?
A) NH3
B) NO2
C) N2O
D) NO3
-
E) NH4
+
10) The concentration of nitrate ion in a solution that contains 0.800 M aluminum
nitrate is _______ M.
A) 0.800
B) 0.400
C) 0.267
D) 2.40
E) 1.60
