Solutions Quiz 1
Do you consider yourself a fan of chemical reactions and Chemistry as a whole? How many solutions do you know and do you know the components that make them? Find out in this solutions quiz below.
- 1.
An event requires 8.4 milliseconds. This is the same interval of time as:
- A.
840000 nanoseconds
- B.
0.0084 seconds
- C.
0.0000084 seconds
- D.
0.0084 microseconds
- E.
All of these measure the same interval
Correct Answer
B. 0.0084 seconds -
- 2.
Which of the following is the smallest mass?
- A.
0.001219 g
- B.
0.0165 mg
- C.
923.1 ug
- D.
0.0000023440 kg
- E.
39000 cg
Correct Answer
B. 0.0165 mg -
- 3.
It is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g/metric ton. A metric ton is 1000 kg. At this concentration, what mass of uranium is present in 1.0 mg of the earth's crust?
- A.
4 nanograms
- B.
4 micrograms
- C.
4 milligrams
- D.
0.00004 g
- E.
4 centigrams
Correct Answer
A. 4 nanograms -
- 4.
Which of the these samples has the smallest mass?
- A.
160 ug
- B.
0.016 g
- C.
0.00016 mg
- D.
0.00000016 kg
- E.
0.0016mg
Correct Answer
C. 0.00016 mg -
- 5.
In 1928, 1.0 g of a new element was isolated from 660 kg of the ore molybdenite. The percent by mass of this element in the ore was:
- A.
1.5%
- B.
6.6%
- C.
1.0%
- D.
0.00015%
- E.
0035%
Correct Answer
D. 0.00015% -
- 6.
An unknown substance dissolves readily in water but not in benzene (a nonpolar solvent). Molecules of what type are present in the substance?
- A.
Neither polar nor nonpolar
- B.
Polar
- C.
Either polar or nonpolar
- D.
Nonpolar
Correct Answer
B. Polar -
- 7.
A water solution of sodium chloride is a good conductor of electricity. Because of this property, table salt is classified as a:
- A.
Semi-electrolye
- B.
Weak electrolyte
- C.
Strong electrolyte
- D.
Nonelectrolyte
Correct Answer
C. Strong electrolyte -
- 8.
A 20.0 g sample HF is dissolved in water to give 200. mL of solution. The concentration of the solution is:
- A.
1.0 M
- B.
3.0 M
- C.
0.10 M
- D.
5.0 M
- E.
10.0 M
Correct Answer
D. 5.0 M -
- 9.
1.00 mL of a 0.00035 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming solution A. 2.00 mL of solution A is diluted with 8.00 mL of petroleum ether, forming solution B. How many grams of oleic acid are in 5.00 mL of solution B? (molar mass for oleic acid = 282 g)
- A.
0.000494 g
- B.
0.0000007 g
- C.
0.0000494 g
- D.
0.00000197 g
- E.
0.00000987 g
Correct Answer
E. 0.00000987 g -
- 10.
How many grams of NaCl are contained in 350. mL of a 0.250 M solution of sodium chloride?
- A.
41.7 g
- B.
5.11 g
- C.
14.6 g
- D.
87.6 g
- E.
None of these
Correct Answer
B. 5.11 g -
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Sep 26, 2017Quiz Edited by
ProProfs Editorial Team -
Oct 02, 2009Quiz Created by
Pszpila
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