Measurement and significant figures chemistry

    • [PDF File]Significant Figures in Measurement and Calculations

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      Significant Figures (Sig. Figs.) The mass of an object weighed on a triple beam balance (precision ± 0.1g) is found to be 23.6 g. This quantity contains 3 significant figures, i.e., three experimentally meaningful digits. If the same measurement is made with an analytical balance (precision ± 0.0001g) , the mass might be 23.5820 g (6 sig. fig.)

    • Significant Figures - Chemistry

      Significant Figures in Measurement and Calculations A successful chemistry student habitually labels all numbers, because the unit is important. Also of great ... but merely locates the decimal point. It is not a significant figure. Also, in the measurement 0.07 kg, the zeros are used merely to locate the decimal point and are, therefore, not ...

    • [PDF File]SIGNIFICANT FIGURES

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      Module 3 – Significant Figures ©2008 For additional help, visit www.ChemReview.net v. n8 Page 36 Significant Figures: Fundamentals Use these rules when recording measurements and rounding calculations in chemistry. 1. When Recording a Measurement

    • [PDF File]Module 3 – Significant Figures - Moorpark College

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      A Short Guide to Significant Figures What is a “significant figure”? The number of significant figures in a result is simply the number of figures that are known with some degree of reliability. The number 13.2 is said to have 3 significant figures. The number 13.20 is said to have 4 significant figures.

    • [PDF File]Standards for Measurement - Columbia University

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      Introductory Chemistry Laboratory Experiment 2 Measurements and Significant Figures: Measuring Density EXPERIMENTAL TASK To measure the density of both water and the rubber used in laboratory stoppers using a number of different methods. Objectives After completing this experiment, the student will be able to: 1.

    • [PDF File]CHM 130 Sig Fig Practice Problems

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      Period:_____ Practice Worksheet for Significant Figures Name:_____ Identify the sums or differences of the following to the correct number of significant figures: 41) 8.41 X 1014 + 9.71 X 1012 = 8.51 E 14 42) 5.11 X 1023 - 4.2 X 1021 = 5.1 E 23 43) 8.2 X 1030 + 4.560 X 1023 = 8.2 E 30 44) 6.023 X 10-23 - 2.1 X 10-20 = -2.9 E -20 Express the product and the quotients of the …

    • [PDF File]Measurements and Significant Figures: Measuring Density

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      Perform the following calculation and report the answer to the correct number of significant figures (assume all quantities are measured): 4.86 + 9.0 + 0.1145 Question:2 Assuming all numbers come from measurements, perform the following calculation and report the answer to the correct number of significant figures 7.473 x 8.8 x (2.19 x 105)

    • [PDF File]A Short Guide to Significant Figures - Yale Astronomy

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      CHM 130 Sig Fig Practice Problems 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.

    • [PDF File]Practice Worksheet for Significant Figures

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      Rules for Significant Figures (sig figs, s.f.) A. Read from the left and start counting sig figs when you encounter the first non-zero digit 1. All non zero numbers are significant (meaning they count as sig figs) 613 has three sig figs 123456 has six sig figs 2. Zeros located between non-zero digits are significant (they count)

    • [PDF File]PREPARATION FOR CHEMISTRY LAB: MEASUREMENT (Part I) …

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      Significant figures The rules for significant figures can be summarized as follows: 1. To determine the number of significant figures: o All nonzero digits are significant. (1.234 has 4 sig figs) o Zeroes between nonzero digits are significant. (1.02 has 3 sig figs) o Zeroes to the left of the first nonzero digits are not significant. (0.012 ...

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