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[PDF File]Significant Figures
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Significant Figures CHEM 30A Significant figures convey the precision to which a number is known. They are a part of any numerical answer, and are as important as the number itself and the units.
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[PDF File]SIGNIFICANT FIGURES
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SIGNIFICANT FIGURES SUMMARY CHECKLISTS 1. Check-list for the percent deviation calculation The Chem21lab computer program tells you what values to use in the subtraction to get ... log(10.5)=1.021. The mantissa is .021 and has 3 digits because 10.5 has 3 sig figs).
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[PDF File]Working with Logarithm: Significant Figures and Operations
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Significant Figures When Finding the Log of a Number Before we begin, let us establish the vocabulary involving exponential expressions and logarithms: In an exponential expression such as 4.2 x 10– 2, "4.2" is called the coefficient, and – 2 is called the exponent.
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[PDF File]Significant Figures in Log- & Antilog-arithms
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Significant Figures in Log- & Antilog-arithms A logarithm is composed of a characteristic (integer part) and a mantissa (decimal part). Number of digits in mantissa of log x = number of significant figures in x: Log (5.403 x 10-8) = -7.2674 Antilog:
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[PDF File]SIGNIFICANT FIGURES, EXPONENTS, AND SCIENTIFIC …
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2. Zero digits that occur between nonzero digits are significant. 202 contains three significant figures ⎫ In these examples, the zeros 450.5 contains four significant figures ⎬ are part of a measurement. 390.002 contains six significant figures ⎭ 3. Zeros at the beginning of a number (i.e., on the left-hand side) are considered to be placeholders and
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[PDF File]Significant Figures in Calculations Rules
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Significant Figures with Log Values (Chapter 9) Procedure to determine significant figures after performing a logarithm: (We will not need this until chapter 9 when we do pH) 1. Calculate the logarithm of the number. 2. Round the result to keep the same number of decimal placesas there were significant figures in the original number.
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[PDF File]Significant Figures
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Significant Figures The Significant Figures of a number refer to those digits that have meaning in reference to a measured or specified value.Correctly accounting for Significant Figures is important while performing arithmetic so that the resulting answers accurately
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[PDF File]CHM 130 Sig Fig Practice Problems
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Significant digits or figures are not something we make up to terrorize you all semester long. They represent the accuracy of a measurement. For example, a cheap bathroom scale bought at the dollar store reads your weight as 152 pounds, not 152.45809 pounds. It is not that accurate. Significant digits are very important in all measurements.
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[PDF File]Significant Figure Rules for logs - Laney College
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log 0.00056 = -3.2518 log 0.00057 = -3.2441 log 0.00058 = -3.2366 Again, the numbers we took the log of have two significant figures, and the results differed in the second decimal place. Conclusion: When you take the log of a number with N significant figures, the result should have N decimal places. The number in front of the decimal place ...
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[PDF File]Significant Figures - Johns Hopkins University
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of significant figures. For example: 1.23x2.0=2.5, not 2.46. 5. For logarithms, retain in the mantissa (the number to the right of the decimal point in the logarithm) the same number of significant figures as there are in the number whose logarithm you are taking. For example: log(12.8)=1.107. The
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Significant figures with log