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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