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Unformatted text preview: Scientific Notation 1.23 x 10 11 Coefficient: greater than or equal to 1, but less than 10. Cannot be a double digit number! Exponent: provides information about how to move the decimal point. (+) Move the decimal point to the right (–) Move the decimal point to the left Express 500 to 1, 2, and 3 significant figures… 5 x10 2 5.0 x10 2 5.00 x10 2 1 sig fig 2 sig figs 3 sig figs Practice: Put the following numbers in scientific notation with 3 significant figures: 0.00477 56,000 289,000,000 0.00000880 Conclusions: Significant figures are related to the degree of precision in an instrument Not all digits will be significant… o Non-zero digits are significant o Zeros between non-zero digits are significant o Zeros to the right of a non-zero digit and a decimal point are significant o Place holder zeros are not significant Use scientific notation for ambiguous numbers...
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This note was uploaded on 01/01/2012 for the course CHEM 101 taught by Professor Donahue during the Spring '11 term at Long Island U..
- Spring '11