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1. Fifita uses a thermometer and finds the boiling põint öf consecutive experimental measurements. She looks in a reference book and finds the actual bc point of ethyl alcohol is 78.0 °C. a. What is the percent error? b. Are her measurements accurate?

1. Fifita uses a thermometer and finds the boiling põint öf consecutive experimental measurements. She looks in a reference book and finds the actual bc point of ethyl alcohol is 78.0 °C. a. What is the percent error? b. Are her measurements accurate?

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Name: Date: Period: Percent Error Practice Show all work. NO WORK = NO CREDIT!!! 1. Fifita uses a thermometer and finds the boiling point of ethyl alcohol to be 75.0 °C on three consecutive experimental measurements. She looks in a reference book and finds the actual boiling point of ethyl alcohol is 78.0 °C. a. What is the percent error? b. Are her measurements accurate? c. Are her measurements precise? 2. The density of water at 4 °C is known to be 1.00 g/cm³. Jordan experimentally found the density of water to be 1.085 g/cm³. He took one mass and one volume reading. a. What is Jordan's percent error? b. Are his measurements accurate? C. Are his measurements precise? 3. The Handbook of Chemistry and Physics lists the density of acetone to be 0.7988 g/mL. Steffan, Andrew and Jasiel each took several mass readings and volume readings (like all good lab groups should!) They then calculated the density to be 0.7914 g/mL, 0.7914 g/mL, 0.7913 g/mL, 0.7915 g/mL and 0.7914 g/mL. Mrs. Joiner allows up to + 0.5 % error to make an “A". a. Did Steffan's lab group make an “A"? PROVE YOUR ANSWER. b. Was the group accurate? c. Was the group precise? A
Transcribed Image Text:Name: Date: Period: Percent Error Practice Show all work. NO WORK = NO CREDIT!!! 1. Fifita uses a thermometer and finds the boiling point of ethyl alcohol to be 75.0 °C on three consecutive experimental measurements. She looks in a reference book and finds the actual boiling point of ethyl alcohol is 78.0 °C. a. What is the percent error? b. Are her measurements accurate? c. Are her measurements precise? 2. The density of water at 4 °C is known to be 1.00 g/cm³. Jordan experimentally found the density of water to be 1.085 g/cm³. He took one mass and one volume reading. a. What is Jordan's percent error? b. Are his measurements accurate? C. Are his measurements precise? 3. The Handbook of Chemistry and Physics lists the density of acetone to be 0.7988 g/mL. Steffan, Andrew and Jasiel each took several mass readings and volume readings (like all good lab groups should!) They then calculated the density to be 0.7914 g/mL, 0.7914 g/mL, 0.7913 g/mL, 0.7915 g/mL and 0.7914 g/mL. Mrs. Joiner allows up to + 0.5 % error to make an “A". a. Did Steffan's lab group make an “A"? PROVE YOUR ANSWER. b. Was the group accurate? c. Was the group precise? A
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