Multiply and divide sig figs
[DOC File]At an Olympic trials race, a runner was claimed to have ...
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Multiply & divide before addition & subtraction. Keep track of the number of sig. figs. at each step, but round off the # of sig. figs. at the end. E.g. 1) 25.00 x 0.1000 – 15.87 x 0.1036. Practice Problems. 1) Perform the following operations and express the answer with the correct number of sig figs.
[DOC File]CHEMIESTUDYSHEET
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multiply/divide: keep lowest # of sig figs. add/subtract: keep lowest # of decimal places. decimal places in log function = sig figs in answer. molecular vs. empirical. molecular: actual amount of atoms. molar mass / empirical mass = ratio of molecular to empirical. empirical: simplest ratio of atoms in formula or moles of each element ...
[DOC File]Unit Conversions - Scientific Notation and Significant Digits
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Question: If you multiply or divide two numbers, how many significant digits are in the answer? Observe: The first metric speed question is about Marcia, who ran at a speed of 3.50 meters per second. How many significant digits are in this value? _____ Solve: Use the tiles to convert Marcia’s speed to kilometers per hour.
[DOC File]1)
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They always count as Sig Figs. Trailing Zeros- are zeros at the right end of the number. They are significant only if the number is written with a decimal point. 7000 450.0 350 44 578 . 305 0.006200 565.05 5500 74.00 7040.0 23.7 x 10-2. 1.4 x 107 . 4.293 x 104 . 705 600 4301.0 0.00056 40280 33214 2.003 Adding & Subtracting Sig Figs:
[DOC File]Use of Significant Digits
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If you multiply or divide two numbers, the answer is rounded off to the number of significant figures in the least precise term used in the calculation (i.e. the number with the fewest sig figs). If you add or subtract, the answer is rounded to the same number of decimal places as the measurement with the least . number. of decimal places.
Find the number of significant digits in the following:
Multiply or Divide the following measured values. Account for significance and use scientific notation form where appropriate. 1) 344.0 m x 22.111m = 2) 887.321g ( 54 L =
[DOC File]Rules for Using Significant Figures in Mathematical Operations
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How do you round to the correct number of sig figs when multiplying, dividing, adding, or subtracting? How do you precisely read a triple beam balance, ruler, graduated cylinder, etc.? Scientific notation. How do you convert a number into scientific notation and vice versa? How do you multiply and divide numbers in scientific notation ...
[DOC File]Chapter 2: Measurements and Calculations
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Multiply/Divide: round answer to the fewest number of sig figs. 5. When using conversion factors round the same number of sig figs as are in the original number. D. Scientific Notation. 1. In order to use numbers that are really large or really small we …
[DOC File]Significant Figures
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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 right of a decimal are significant 85.00 g has four sig figs. 9.000 000 000 mm has 10 sig figs Zeros at the end of a number but to the left of a decimal may ...
[DOC File]Chapter 5 - Measurements and Calculations
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Calculations with Sig Figs. Multiplication and Division. Number of the sig. figs. is the result of the measurement with the smallest number of sig. figs. (least accurate) Ex 1: 4.63 m x 7.5 m Ex. 2: 8.460 m2 / 2.1 m. Addition and Subtraction. Align the decimal points and carry out the calculation.
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