Solubility Worksheet With Answers Page 4
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816) The concentration of lead nitrate (Pb(NO 3 ) 2 ) in a 0.726 M solution is __________ molal. The density
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of the solution is 1.202 g/mL.
A) 0.650
B) 1.928
C) 0.819
D) 0.476
E) 0.755
17) The concentration of a benzene solution prepared by mixing 12.0 g C 6 H 6 with 38.0 g CCl 4 is
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__________ molal.
A) 0.316
B) 4.04
C) 0.508
D) 0.240
E) 0.622
18) A solution is prepared by dissolving 15.0 g of NH 3 in 250 g of water. The density of the resulting
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solution is 0.974 g/mL. The mole fraction of NH 3 in the solution is __________.
A) 0.940
B) 0.0640
C) 16.8
D) 0.0597
E) 0.922
19) A solution is prepared by dissolving 15.0 g of NH 3 in 250 g of water. The density of the resulting
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solution is 0.974 g/mL. The molarity of NH 3 in the solution is __________.
A) 3.24
B) 0.00353
C) 3.53
D) 0.882
E) 60.0
20) A solution is prepared by dissolving 23.7 g of CaCl 2 in 375 g of water. The density of the resulting
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solution is 1.05 g/mL. The concentration of Cl - in this solution is __________ M.
A) 1.20
B) 0.562
C) 6.64 × 10 -2
D) 0.214
E) 1.12
21) A solution is prepared by dissolving 23.7 g of CaCl 2 in 375 g of water. The density of the resulting
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solution is 1.05 g/mL. The concentration of CaCl 2 in this solution is __________ molal.
A) 5.70
B) 1.76
C) 0.569
D) 0.214
E) 63.2
22) The concentration of HCl in a solution that is prepared by dissolving 5.5 g of HCl in 200 g of
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C 2 H 6 O is __________ molal.
A) 7.5 × 10 -4
B) 0.75
C) 1.3
D) 27.5
E) 3.3 × 10 -2
23) The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C 2 H 6 O
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is __________ M. The density of the solution is 0.79 g/mL.
A) 21
B) 0.93
C) 6.0 × 10 -4
D) 1.72
E) 0.58
24) The mole fraction of He in a gaseous solution prepared from 4.0 g of He, 6.5 g of Ar, and 10.0 g of
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Ne is __________.
A) 0.20
B) 0.86
C) 1.5
D) 0.11
E) 0.61
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