significant-digits

# significant-digits - Significant Digits and Isotopic...

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How big? Significant Digits and Isotopic Abundance How small? How accurate?

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Reminder: bring a calculator to class
Scientific notation Read “Scientific Notation” on page 621 Complete the chart below 9.07 x 10 2 0.0907 5.06 x 10 4 0.000506 2.3 x 10 12 2 300 000 000 000 1.27 x 10 2 127 Scientific notation Decimal notation

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What time is it? Someone might say “1:30” or “1:28” or “1:27:55” Each is appropriate for a different situation In science we describe a value as having a certain number of “significant digits” The # of significant digits in a value includes all digits that are certain and one that is uncertain “1:30” likely has 2, 1:28 has 3, 1:27:55 has 5 There are rules that dictate the # of significant
Answers to question A) 1. 2.83 2. 36.77 3. 14.0 4. 0.0033 5. 0.02 6. 0.2410 7. 2.350 x 10 2 8. 1.00009 9. 3 10. 0.0056040 3 4 3 2 1 4 4 6 infinite 5

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Significant Digits It is better to represent 100 as 1.00 x 10 2 Alternatively you can underline the position of the last significant digit. E.g. 100 . This is especially useful when doing a long
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## This note was uploaded on 11/09/2011 for the course CHEM 110 taught by Professor Sullivan during the Fall '10 term at BYU.

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significant-digits - Significant Digits and Isotopic...

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