CHE117 C2-Worksheet 1

CHE117 C2-Worksheet 1 - of significant figures. a. 98.1325...

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CHE 117- Chemistry and the Modern World Chapter 2 - Worksheet 1. Express the following numbers in standard scientific notation. a. 85,000,000 = ________________ d. 0.006542 x 10 -4 = ________________ b. 0.00008763 = ________________ e. 0.01578 = ___________________ c. 851.26 x 10 2 = ________________ f. 212,000 = ___________________ 2. Expand the following scientific notation numbers into ordinary numbers. a. 6.23 x 10 3 = ___________________ d. 9.92 x 10 2 = __________________ b. 2.155 x 10 -5 = __________________ e. 9.92 x 10 -2 = __________________ c. 5.004 x 10 -3 = __________________ f. 1.000 x 10 1 = __________________ 3. Indicate the number of significant figures in each of the following numbers. a. 10000. = _____________________ d. 1 x 10 3 = ____________________ b. 0.00000001 = _________________ e. 93,100,100 = _________________ c. 0.000010010 = ________________ f. 4.60 x 10 2 = _________________ 4. Perform the following calculations and record the answer with the correct amount
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Unformatted text preview: of significant figures. a. 98.1325 + 12.0112 + 18.13 = ________________________ b. 56.13 59.102 + 89.2 = _____________________________ c. (2.056 x 10-2 ) 3 = ____________________________________ d. 3.450 * 1.2003 * 0.00010 = ___________________________ Name __________________________________ 5. Perform the following conversions and record the answer with the correct amount of significant figures a. 87.2 cm = ____________ inches b. 23.3 m = ________________ nm c. 3.34 weeks = ______________ minutes d. 305 K = __________________ F e. 0.003040 ML = ________________ L f. 30.3 yd = _________________ m g. 6 L = _______________ gallons h. 3.4 lb = ______________ mg i. 120 F = ______________ C j. 9.8 kg = ______________ mg Name _________________________________...
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This homework help was uploaded on 04/22/2008 for the course CHE 117 taught by Professor Staff during the Spring '08 term at Centre College.

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CHE117 C2-Worksheet 1 - of significant figures. a. 98.1325...

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