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1) The product of the nuclear reaction in which 40Ar is subjected to neutron capture followed by
alpha emission is ________.
A) 37S
B) 41Ar
C) 36S
D) 45Ca
E) 35Ar
2) A neutralization reaction between an acid and a metal hydroxide produces ________.
A) water and a salt
B) hydrogen gas
C) oxygen gas
D) sodium hydroxide
E) ammonia
3) The general formula of an alkane is ________.
A) C2nH2n+2
B) CnH2n
C) CnH2n+2
D) CnH2n-2
E) CnHn
4) A 25.0 mL sample of an acetic acid solution is titrated with a 0.175 M NaOH
solution. The equivalence point is reached when 10.2 mL of the base is added. The
concentration of acetic acid in the sample was ________ M.
A) 0.365
B) 0.175
C) 0.119
D) 0.0714
E) none of the above
5) Which of the following choices has the compounds correctly arranged in order of
increasing solubility in water? (least soluble to most soluble)
A) CCl4 < CHCl3 < NaNO3
B) CH3OH < CH4 < LiF
C) CH4 < NaNO3 < CHCl3
D) LiF < NaNO3 < CHCl3
E) CH3OH < Cl4 < CHCl3
6) A solution is prepared by dissolving 27.7 g of CaCl2 in 375 g of water. The density of
the resulting solution is 1.05 g/mL. The concentration of CaCl2 is ________% by mass.
A) 6.88
B) 7.22
C) 0.0722
D) 0.0688
E) 6.24
7) Which one of the following pairs cannot be mixed together to form a buffer solution?
A) C5H5N, C5H5NHCl
B) HC2H3O2, NaOH (C2H3O2
- = acetate)
C) KOH, HI
D) NH2CH3, HCl
E) NaClO, HNO3
8) The correct name for Al2O3 is ________.
A) aluminum oxide
B) dialuminum oxide
C) dialuminum trioxide
D) aluminum hydroxide
E) aluminum trioxide
9) Oxides of the active metals combine with water to form ________.
A) metal hydroxides
B) metal hydrides
C) hydrogen gas
D) oxygen gas
E) water and a salt
10) A tin atom has 50 electrons. Electrons in the ________ subshell experience the
lowest effective nuclear charge.
A) 1s
B) 3p
C) 3d
D) 5s
E) 5p
11) A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10
L to 15 L. The final pressure is ________ atm.
A) 1.5
B) 7.5
C) 0.67
D) 3.3
E) 15
12) The density (in g/L) of CO2 at 1106.2 torr and 56.3 °C is ________.
A) 2.37
B) 1800
C) 13.9
D) 0.0234
E) 0.0538
13) Given the data in the table below, ΔH°rxn for the reaction
3 Cl2 (g) + PH3 (g)→ PCl3 (g) + 3 HCl (g)
is ________ kJ.
A) -385.77
B) -570.37
C) 570.37
D) 385.77
E) The ΔH°f of Cl2 (g) is needed for the calculation.
14) At what speed (m/s) must a 10.0-mg object be moving to have a de Broglie
wavelength of
3.3 X 10-41 m?
A) 4.1 m/s
B) 1.9 X 10-11 m/s
C) 2.0 X 1012 m/s
D) 3.3 X 10-42 m/s
E) 1.9 X 1013 m/s
15) Which of the following are combination reactions?
1. CH4 (g) + O2 (g) → CO2 (g) + H2O (l)
2. CaO (s) + CO2 (g) → CaCO3 (s)
3. Mg (s) + O2 (g) → MgO (s)
4. PbCO3 (s) → PbO (s) + CO2 (g)
A) 1, 2, and 3
B) 2 and 3
C) 1, 2, 3, and 4
D) 4 only
E) 2, 3, and 4
16) Benzene behaves differently from a hydrocarbon which simply contains three C C
bonds in that the latter would be expected to react much more readily with ________.
A) H2
B) Cl2
C) Br2
D) HCl
E) all of the above
17) The vapor pressure of a liquid ________.
A) increases linearly with increasing temperature
B) increases nonlinearly with increasing temperature
C) decreases linearly with increasing temperature
D) decreases nonlinearly with increasing temperature
E) is totally unrelated to its molecular structure
18) What is the molality of sodium chloride in solution that is 13.0% by mass sodium
chloride and that has a density of 1.10 g/mL?
A) 2.23
B) 1.30
C) 2.56
D) 2.03
E) 1.10
