Chem 1010 - General Chemistry 1 » Summer 2021 » Chapter 13 Quiz
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Question #1
Molality (m) is defined as moles of solute per _____ of _____.
A.
L; solution
B.
kg; solution
C.
mole; solution
D.
kg; solvent
Question #2
If two liquids are miscible, they _____ because _____.
A.
do not mix together; their densities are dissimilar
B.
mix together; their intermolecular interactions are dissimilar
C.
do not mix together; their intermolecular interactions are dissimilar
D.
mix together; their intermolecular interactions are similar
Question #3
If 385 g ethylene glycol is mixed with 415 g water, what is the weight percent of ethylene glycol in the mixture?
A.
30.0%
B.
41.5%
C.
48.1%
D.
51.9%
Question #4
What is the vapor pressure of a 45.0% (by mass) solution of glucose, C6H12O6, at 90.0°C, given that the vapor pressure of pure water at that temperature is 526 mm Hg?
A.
486 mm Hg
B.
237 mm Hg
C.
39.8 mm Hg
D.
289 mmHg
Question #5
A solution with solute concentration equal to the solubility is said to be _____; _____ solute will dissolve in such a solution.
A.
undersaturated; no more
B.
saturated; no more
C.
undersaturated; more
D.
saturated; more
Question #6
The concentration unit one part per billion (one ppb) is equivalent to one _____ of solute per _____ of solution
A.
ng; kg
B.
μg; kg
C.
mg; kg
D.
μg; g
Question #7
Calculate the concentration in ppm of Cd in a 2.00 mL sample which has been shown to contain 16.4 μg Cd. Assume the sample has a density of 1.00 g/mL.
A.
8.20 × 103
B.
8.20
C.
32.8
D.
8.20 × 10−3
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