Chapter 2worksheetfinal-1

# Chapter 2worksheetfinal-1 - d 67.84500 e 5.6983 x 10-4 f...

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Chapter 2: Worksheet Name: CHM 1025 1. How many significant figures are in the following? a. 100 b. 32.07 c. 1200.34 d. 5678900.002 e. 156900 f. 0.00256 g. 0.00549000 h. 1.3 x 10 -3 i. 5.789 x 10 5 j. 000123 k. 000568.005 l. 45893 m. 760.34 n. 5600.0 o. 5600 2. Change the following into or out of scientific notation a. 4500.2 b. 2.356 x 10 -3 c. 0.0000568 Chapter 2 Page 1

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d. 892.3002 e. 0.005812 f. 4.69 x 10 -5 g. 6.91 x 10 4 h. 0.0015975 i. 8.56 x 10 2 j. 100.156 3. Round the following to 3 sig figs (you may have to put your answer in scientific notation) a. 156.998 b. 4.5850001 c. 5.325000 d. 689.3 e. 6.949 x 10 5 f. 8.231 x 10 -4 g. 568972 h. 4650000 4. Round the following to 4 sig figs (you may have to put your answer in scientific notation) a. 123456 b. 45.689 c. 58.55555 Chapter 2 Page 2

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Unformatted text preview: d. 67.84500 e. 5.6983 x 10-4 f. 4.5000023 x 10 7 g. 7.85651 x 10 3 h. 159753 5. Calculate the following (remember that the answer has to have the right # of sig figs and that you will probably have to round to get the correct # of sig figs) a. 32.76 + 1.3 = b. 568.56 + 0.3359 = c. 45 + 12.3 = d. 1012.5 + 56 = e. 78.5 – 5.23 = f. 14569 – 5.123 = g. 89.26 – 3.0 = h. 75-52.658 = i. 56.2 * 8956 = j. 0.0056 * 68.987 = k. 0.125008 * 23 = l. 1.56 x 10-3 * 56.68 = m. 9.956 x10 5 * 5.24 x 10 3 = n. 4.68 / 2.3 = o. 56.89 / 0.0268 = p. 54 / .002359 = Chapter 2 Page 3 q. 5.28 x10-8 / 4.23 x 10-11 = r. 1200.26 / 478.00095 = Chapter 2 Page 4...
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## This note was uploaded on 10/20/2011 for the course CHEM 1025 taught by Professor Smith during the Spring '10 term at Valencia.

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Chapter 2worksheetfinal-1 - d 67.84500 e 5.6983 x 10-4 f...

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