Chem 065 - Introductory General Chemistry » Winter 2024 » Chapter 2 Quiz
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Question #1
The number of significant figures in the measurement of 45.030 mm is
A.
five
B.
four
C.
three
D.
six
E.
none of these
Question #2
Which of the following is the largest unit?
A.
millimeter
B.
micrometer
C.
decimeter
D.
meter
E.
kilometer
Question #3
What is 6.5 m converted to inches? Note 1 in = 2.54 cm
A.
1700 in
B.
255.9 in
C.
260 in
D.
1651 in
E.
39 in
Question #4
What is the answer, with the correct number of decimal places, for this problem? 4.392 g + 102.40 g + 2.51 g =
A.
110 g
B.
109.30 g
C.
109.3 g
D.
109.302 g
E.
109 g
Question #5
Written in scientific notation, 0.000 000 33 is
A.
3.3 × 10-8
B.
3.3.
C.
3.3 × 107.
D.
3.3 × 108.
E.
3.3 × 10-7
Question #6
Round off each of the following to three significant figures 0.0034088
A.
0.00341
B.
0.0033
C.
0.0034
D.
0.00342
E.
0.00343
Question #7
Which one of the following substances will float in gasoline, which has a density of 0.66 g/mL?
A.
table salt (density= 2.16 g/mL)
B.
sugar (density= 1.59 g/mL
C.
aluminum (density= 2.70 g/mL
D.
balsa wood (density=0.16 g/mL)
E.
mercury (density=13.6 g/mL)
Question #8
What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?
A.
42 g
B.
41.9 g
C.
53 g
D.
67.1 g
E.
67 g
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