SigFig and Conversions Answers

SigFig and Conversions Answers - Sample Questions for...

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Sample Questions for Significant Figures and Unit Conversions-KEY Use the correct number of significant figures for each problem. 01. Convert to standard exponential (i.e. scientific) notation (watch for significant figures !) a) 22,414 b) 0.00017 g c) 610.0 m d) 0.00890 L Ans: a) 2.2414 x 10 4 b) 1.7 x 10 4 c) 6.100 x 10 2 d) 8.90 x 10 3 02. Convert from exponential notation to regular numbers. a) 4.3 x 10 4 b) 3.02 x 10 6 c) 3.471 x 10 2 d) 9.3947 x 10 3 Ans: a) 0.00043 b) 3,020,000 c) 0.03471 d) 9,394.7 03. (1.34) Indicate the number of significant figures in each measurement. a) 8.1441 mg b) 0.00050 m 2 c) 6,480,100 s d) 15.20 ° C e) 10.0800 x 10 2 g Ans: a) 5 b) 2 c) ambiguous: either 5, 6, or 7 d) 4 e) 6 04. (1.36) Round to three significant figures and express the result in scientific notation. a) 100.000 b) 0.005000 c) 73,000 d) 1.5615 x 10 5 e) 8854.05 f) 12,350 Ans: a) 1.00 x 10 2 b) 5.00 x 10 3 c) 7.30 x 10 4 d) 1.56 x 10 5 e) 8.85 x 10 3 f)
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This homework help was uploaded on 04/17/2008 for the course CHEMISTRY Gen and An taught by Professor Thomaskim during the Fall '08 term at RIT.

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