The following data were obtained in order to determine the density of cylindrical metal bar: Height (cm) Diameter (cm) Mass (g) Trial 1 6.50 1.25 46.683 Trial 2 6.45 1.26 46.332 Calculate the average density of the metal bar. In the following calculations on this data, show the formula used, the substituted numbers and the result. 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. e) What is the purpose of repetition in measurements?
The following data were obtained in order to determine the density of cylindrical metal bar: Height (cm) Diameter (cm) Mass (g) Trial 1 6.50 1.25 46.683 Trial 2 6.45 1.26 46.332 Calculate the average density of the metal bar. In the following calculations on this data, show the formula used, the substituted numbers and the result. 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. e) What is the purpose of repetition in measurements?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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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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