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Scan_Doc0039 - Exercises 33 Evaluate each of the following...

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- Evaluate each of the following and write the answer to the ap- propriate number of significant figures. a. 212.2 + 26.7 + 402.09 b. 1.0028 + 0.221 + 0.10337 c. 52.331 + 26.01 - 0.9981 d. 2.01 X 10 2 + 3.014 X 10 3 e. 7.255 - 6.8350 - Perform the following mathematical operations, and express each result to the correct number of significant figures. 0.102 X 0.0821 X 273 1.01 b. 0.14 X 6.022 X 1023 C. 4.0 X 10 4 X 5.021 X 10- 3 X 7.34993 X 10 2 d. 2.00 X 10 6 3.00 X 10- 7 a. _- • Perform the following mathematical operations and express the result to the correct number of significant figures. 2.526 0.470 80.705 a. --+--+--- 3.1 0.623 0.4326 b. (6.404 X 2.91)/(18.7 - 17.i) c. 6.071 X 10- 5 - 8.2 X 10- 6 - 0.521 X 10- 4 d. (3.8 X 10- 12 + 4.0 X 10- 13 )/(4 X 10 12 + 6.3 X 10 13 ) 9.5 + 4.1 + 2.8 + 3.175 4 (Assume that this operation is taking the average of four num- bers. Thus 4 in the denominator is exact.) 8.925 - 8.905 00 r. 8.925 X 1 (This type of calculation is done many times in calculating a percentage
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This note was uploaded on 12/13/2010 for the course CHEM 2301 taught by Professor Bill during the Spring '10 term at South Texas College.

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