Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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How many significant figures are represented in each of the following numbers?
a. 3.8 x 10-3
b. 5.20 x 10²
c. 0.00261
d. 24
e. 240
f. 2.40
2. Significant Figures
Record the number of significant figures in each of the following numbers.
a. 6.03
b. 0.0603
c. 650.3
d. 650
e. 2.670 x 103
f. 0.0100
Determine the correct amout of significant figures for each number or operation.
Column A
1.
0.002040
2.
15.36 + 2.255 = 17.615
3.
510.
4.
22.2 x 89.01 = 1,976.022
Column B
a.2
b.3
c.8
d.4
e.6
f.5
g.1
h.7
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- 1. In which of the following pairs do both numbers contain the same number of significant figures? a. 2.0500 m and 0.0205 b. 600.0 K and 60 K c. 0.000 75 s and 75 000 s d. 6.240 L and 6.240 X 10 -² Larrow_forwardThe result of the calculation (1.0161-0.8711) with correct number of significant figure is a. 0.04700 b. 0.1450 c. 0.145 d. 0.0471arrow_forwardCalculate to the correct number of significant figures.a. 0.004 + 0.09879 b. 1239.3 + 9.73 + 3.42c. 2.4 - 1.777 d. 532 + 7.3 - 48.523arrow_forward
- A. How many significant figures are in each of the following numbers? 1. 1.234 2. 1.2340 3. 1.2340 x 10-3 4. 1.2340 x 10^-3 5. 1234 6. 12340 7. 0.012340 8. 12.34 9. 123.4 10. 1.23400 x 10-5 B. Express the following number in scientific notation with correct significant figure. 1. 900 000 (3SF) 2. 3400 (2SF) 3. 45 (3SF) 4. 0.815 (2SF) 5. 0.00891 (2SF) 6. 4 500 (2SF) 7. 0.00766 (1SF) 8. 56 000 (2SF) 9. 34 000 (3SF) 10.8930 (4SF)arrow_forwardhow many significant figures are in each of the following numbers? a. 0.025 b. 22.4 c. 0.0404 d. 5.04 * 10^3arrow_forwardConvert 234.0 x10^-4 to the proper exponential notation following thr rules of significant figures. A. 2.340x10^2 B. 2.340x10^ 0 C. 2.340x10^-2 D. 2.34x10 ^ 3 E. 2.340x10^ 3 F. 2.340x10^-1 G. 2.34x10^-2 H. 2.34x10^2 I. 2.34x10 ^-3 J. 2.340x10^ -3 K. 2. 349x10^1 L. 2.340arrow_forward
- The number 1960900, when rounded off to 4 significant figures, would appear as _______ a. 1.961 x 10-6 b. 1961 c. 1960 d. 1.961 x 106arrow_forwardWrite the correct number if significant figures for the following numbers a. 2 816.0014 b. 0.001247 c. 87 000arrow_forwardReview the rules for significant figures in calculations. Perform the following mathematical operations and round to the correct number of significant figures. a. 27.95 + 13.6 b. 408 - 12.21 c. 81.32/0.781 d. 15.9 x 3.021arrow_forward
- How many significant figures are represented in each ofthe following numbers?a. 10.0 d. 2.062b. 0.214 e. 10.50c. 0.120 f. 1050arrow_forwardWhich of the following numbers have four significant figures? A. 12045 B. 5500 C. 5500. D. 0.010210arrow_forwardPerform each of the following operations, reporting the answer with the proper number of significant figures: a. (23)(657) b. 0.00521 +0.236 c. 18.3 3.0576 d. 1157.23 17.812 e. (1.987)(298) 0.0821arrow_forward
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