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[DOC File]Unit 1 Metric system, significant figures, factor label ...
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Sig Fig Rules. Significant figures are all the numbers you know for sure plus one. you are unsure of. (Estimated). All non-zero numbers are significant. Zeroes between two non-zero numbers are significant. The (0) is significant. Zeroes to the right of a non-zero number and to …
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[DOC File]Significant Figures
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0.62 miles / km (2 sig figs) 7. Rules Specific for Zeroes Rule Examples Zeros appearing between nonzero digits are significant 40.7 L has three sig figs. 87 009 km has five sig figs Zeros appearing in front of nonzero digits are not significant 0.095 987 m has five sig figs. 0.0009 kg has one sig fig Zeros at the end of a number and to the ...
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[DOC File]Unit Conversions - Scientific Notation and Significant Digits
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0.0000079 Try converting these numbers into standard form: 1.0 • 10-10 = _____ 1.6 • 10-7 = _____ You can perform this process in reverse to convert numbers in standard form into scientific notation, as shown below. Standard form Place new decimal point Count digits Scientific notation 0.000 05
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[DOC File]Significant Figures Practice Worksheet
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Sig Figs. Rule for . Addition & Subtraction = Least number of . decimal places (highest value) Perform the following calculations and round according to the rule above. 1) 8.20 + 2 = 2) 13.59 + 23.25 + 20 = 3) 42.828 + 67.4629 = 4) 53.4028 - 14 = 5) 39.3 - 0.804 = 6) 91.68 - 19.1 =
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[DOC File]Rules for Using Significant Figures in Mathematical Operations
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Round down whenever the digit following the last significant figure is a 0,1,2,3, or 4. For example, 30.24 becomes 30.2. Round up whenever the digit following the last significant figure is a 6,7,8,9 or a 5 with any nonzero digit at any place after it. For example, 22.49 becomes 22.5.
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[DOC File]Rules for Recognizing Significant Figures
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Recognizing Sig Figs - Practice. How many sig figs are in the following measurements? 1. 46 g 7. 0.04066 g 2. 406 g 8. 0.00406600 g 3. 460 g 9. 1.04066 g 4. 460. g 10. 100.040660 g 5. 460.0 g 11. 1000466 g 6. 40660 g 12. 100046600 g Rules for Rounding Numbers. If the digit to the . immediate right. of the last significant figure is < 5, do not ...
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[DOC File]Rules for recognizing sig figs
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Addition and Subtraction Sig Fig Rules. 1. line up the decimals. 2. draw a line to the right of the number with. the least precision (shortest column) 3. answer can’t go past the line. 4. use the 1st digit past the line to determine. where to round off. Multiplying and Dividing Sig Fig Rule. Answer can have no more digits (sig …
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[DOC File]Chapter 1 Chemistry: Matter and Measurement
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a. 129.0 g + 53.21 g + 1.4365 g = 10.00 m - 0.0448 m = 23.456 × 4.20 × 0.010 = 17 ÷ 22.73 = ****When you are doing several calculations, carry out all the calculations to at LEAST one more sig fig than you need (I carry all digits in my calculator memory) and only round off the FINAL result. Conversion of Units
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[DOC File]Rules for Counting Significant Figures
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Example: 300 has 1 sig. fig., 25400 has 3 sig. figs. b) If there is a . decimal, the zeros . ARE significant. Example: 60.0 has 3 sig. figs., 0.00045300 has 5 sig. figs. (the 4 zeros at the left of the number do not count, but the 2 zeros at the right of the number do count). 5. There are 2 situations where numbers have an . unlimited number
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[DOC File]More Sig Fig Practice
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Name: _____ I. Determine the number of sig figs in the following: a. 478 cm. b. 6.01 g. c. 0.825 m. d. 0.043 kg. e. 1.310 × 1022 atoms
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Sig fig rules for 0