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c) If the accepted value for the density of the bar is 6.70 g/cm³, what is the % relative error? d) Are these measurements more precise or more accurate? Explain. What is the purpose of repetition in measurements?

c) If the accepted value for the density of the bar is 6.70 g/cm³, what is the % relative error? d) Are these measurements more precise or more accurate? Explain. What is the purpose of repetition in measurements?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The following data were obtained in order to determine the density of cylindrical metal bar: Trial 2 6.45 1.26 46.332 Height (cm) Diameter (cm) Mass (g) Trial 1 6.50 1.25 46.683 In the following calculations on this data, show the formula used, the substituted numbers and the result. Calculate the average density of the metal bar. Trial 3 6.44 1.22 47.014 b) Calculate the percent relative average deviation of the measurements. c) If the accepted value for the density of the bar is 6.70 g/cm³, what is the % relative error? d) Are these measurements more precise or more accurate? Explain. What is the purpose of repetition in measurements?
Transcribed Image Text:The following data were obtained in order to determine the density of cylindrical metal bar: Trial 2 6.45 1.26 46.332 Height (cm) Diameter (cm) Mass (g) Trial 1 6.50 1.25 46.683 In the following calculations on this data, show the formula used, the substituted numbers and the result. Calculate the average density of the metal bar. Trial 3 6.44 1.22 47.014 b) Calculate the percent relative average deviation of the measurements. c) If the accepted value for the density of the bar is 6.70 g/cm³, what is the % relative error? d) Are these measurements more precise or more accurate? Explain. What is the purpose of repetition in measurements?
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