Chem 065 - Introductory General Chemistry » Winter 2024 » Practice Significant Figures
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Question #1
How many significant figures are in the number 2903?
A.
2
B.
none of these
C.
5
D.
4
E.
3
Question #2
How many significant figures are represented by the following number that is written in scientific notation? 2.5 × 103
A.
3
B.
2
C.
1
D.
0
Question #3
When rounding the number 2.348615 to 4 significant figures, what is the correct value?
A.
2.349
B.
none of these
C.
2.34
D.
2.348
E.
2.349
Question #4
What answer should be reported, with the correct number of significant figures, for the following calculation? (433.621 - 333.9) × 11.900
A.
1.187 × 103
B.
1.1868 × 103
C.
1.18680 × 103
D.
1.186799 × 103
E.
1.19 × 103
Question #5
What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498
A.
4.6
B.
4.573
C.
4.57
D.
4.5728
E.
4.57277
Question #6
What answer should be reported, with the correct number of significant figures, for the following calculation? (965.43 × 3.911) + 9413.4136
A.
1.32 × 104
B.
1.319 × 104
C.
1.3 × 104
D.
13189
E.
13189.2
Question #7
The number 0.010100 has _______ significant figures.
A.
4
B.
3
C.
5
D.
7
E.
2
F.
6
Question #8
The correct number of significant figures in the number 1.250100 is:
A.
ambiguous
B.
7
C.
5
D.
6
E.
4
Question #9
The correct number of significant figures in the number 0.027090 is:
A.
5
B.
5
C.
5
D.
5
E.
5
F.
5
Question #10
A.
7
B.
ambiguous
C.
3
D.
4
E.
6
Question #11
A.
25.55°C
B.
25.50°C
C.
25.5°C
D.
25°C
E.
26°C
Question #12
In the number 48.930, which digit is estimated?
A.
0
B.
3
C.
9
D.
4
E.
8
Question #13
When rounding the number 2.348615 to 4 significant figures, what is the correct value?
A.
2.34
B.
2.349
C.
2.348
D.
2.349
E.
2.35
Question #14
A student recorded three different measurements (in cm) that he made: 25.66, 24, 24.8956. He then calculated the average for these measurements on a calculator as 24.8518667. What answer should he report, considering the proper number of significant figures?
A.
24.8
B.
25.8
C.
24
D.
24.9
E.
25
Question #15
A.
3
B.
4
C.
5
D.
2
E.
1
Question #16
What is the result of the following operation: (53.987g-53.110 g)÷ 0.8901 mL?
A.
0.98528 g/mL
B.
0.985 g/mL
C.
0.985283 g/mL
D.
0.9852 g/mL
E.
0.9853 g/mL
Question #17
What is the answer with the correct significant figures to the question below?(1.302×103)+952.7(1.57×102)−12.22 Leave the answer in decimal notation.
A.
0.156
B.
1.56
C.
156
D.
15.6
Question #18
How many significant figures are there in the answer to the following problem? (8.881 × 2.100) + 0.590 = ?
A.
three
B.
one
C.
two
D.
four
Question #19
A.
none of these
B.
22.3
C.
22.32816
D.
22
E.
22.328
Question #20
Determine the answer to the following equation with correct number of significant figures: 2.02 + 8.102 - 0.0297 = ________
A.
10.0923
B.
none of these
C.
10.1
D.
10.09
E.
10.092
Question #21
Determine the answer to the following equation with correct number of significant figures: 13.96 - 4.9102 + 71.5 = ________
A.
none of these
B.
80.55
C.
80.5
D.
81
E.
80.5498
Question #22
A.
none of these
B.
24.7
C.
25
D.
24.7
E.
24.695
Question #23
How many significant figures should be reported in the answer to the following calculation? (1.40) × (17.1) =
A.
none of these
B.
1
C.
0
D.
3
E.
2
Question #24
How many significant figures should be reported in the answer to the following calculation? (8.50) × (29.0) × (1.0947) =
A.
4
B.
2
C.
3
D.
none of these
E.
5
Question #25
How many significant figures should be reported in the answer to the following calculation? (4.921) + (16.2) =
A.
4
B.
3
C.
2
D.
none of these
E.
1
Question #26
How many significant figures should be reported in the answer to the following calculation? (43.980) × (19.0023 + 25) =
A.
4
B.
3
C.
2
D.
none of these
E.
1
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