Each piece of glassware was used to fill up 4 different Erlenmeyer flasks. What is the percentage of error for each series of trials? Mean, standard deviation, coefficient variation, and range are already given. Part Two: Accurate or Precise- Common Glassware (g)25mL Vol. Pipette74.830770.785873.306975.6304150mL Beaker 100mL Grad. Cylinder73.682569.502372.337474.216273.63842.14362.911077.925669.351265.523358.369961.535567.299863.18214.01276.351071.207559.1694Water Density at 25degC -77degF(g/mL)72.43462.10872.911076.652068.21720.9997Empty flasks 1-450.012150.054050.045049.2141MeanStd. DeviationCV (%)Range (mean+2std)Range (mean-2std)Percent Error (%)

Part Two: Accurate or Precise- Common Glassware (g) 25mL Vol. Pipette 74.8307 70.7858 73.3069 75.6304 73 6384 150mL Beaker 100mL Grad. Cylinder 73.6825 69.5023 72.3374 74.2162 65.5233 58.3699 61.5355 67.2998 63 1821 72.4346 Empty flasks 1-4 50.0121 50.0540 50.0450 49.2141 Mean

Part Two: Accurate or Precise- Common Glassware (g) 25mL Vol. Pipette 74.8307 70.7858 73.3069 75.6304 73 6384 150mL Beaker 100mL Grad. Cylinder 73.6825 69.5023 72.3374 74.2162 65.5233 58.3699 61.5355 67.2998 63 1821 72.4346 Empty flasks 1-4 50.0121 50.0540 50.0450 49.2141 Mean

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter3: Measurement And Chemical Calculations

Section: Chapter Questions

Problem 5E

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Question

Each piece of glassware was used to fill up 4 different Erlenmeyer flasks. What is the percentage of error for each series of trials? Mean, standard deviation, coefficient variation, and range are already given.

Part Two: Accurate or Precise- Common Glassware (g)
25mL Vol. Pipette
74.8307
70.7858
73.3069
75.6304
150mL Beaker 100mL Grad. Cylinder
73.6825
69.5023
72.3374
74.2162
73.6384
2.1436
2.9110
77.9256
69.3512
65.5233
58.3699
61.5355
67.2998
63.1821
4.0127
6.3510
71.2075
59.1694
Water Density at 25degC -77degF
(g/mL)
72.4346
2.1087
2.9110
76.6520
68.2172
0.9997
Empty flasks 1-4
50.0121
50.0540
50.0450
49.2141
Mean
Std. Deviation
CV (%)
Range (mean+2std)
Range (mean-2std)
Percent Error (%)

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