Chemistry problems - C hapter 1 problems 1.5 Write the...

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Chapter 1 problems 1.5 Write the following measurements in scientific notation: a. 55 000 m = 5.5 x 10 4 m b. 480 g = 4 x 10 2 g c. 0.000 005 cm = 5 x 10 -6 cm d. 0.000 14 s = 1.4 x 10 -4 s e. 0.007 85 L = 7.85 x 10 -3 L f. 670 000 kg = 6.7 x 10 5 Kg 1.11 Identify the numbers in each of the following statements as measured or exact: a. A person weighs 155 lb = Measured b. The basket holds eight apples = Exact c. In the metric system, 1 kg is equal to 1000 g = Exact d. The distance from Denver, Colorado, to Houston, Texas, is 1720 km = Measured 1.17 How many significant figures are in each of the following measured quantities? a. 11.005 g = 5 b. 0.000 32 m = 2 c. 36 000 000 m = 2 d. 1.80 * 104 g = 3 e. 0.8250 L = 4
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f. 30.0 ° C = 3 1.27 For the following problems, give answers with the correct number of significant figures: a. 45.7 * 0.034 =1.6 b. 0.002 78 * 5 = 0.01 c. 34.56/ 1.25 = 27.6 d(0.2465)(25)/ 1.78 = 3.5 1.29 For the following problems, give answers with the correct number of decimal places:
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Chemistry problems - C hapter 1 problems 1.5 Write the...

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