A handbook lists the density of lead as 11.3 g/mL. Several groups of students are attempting to determine the density of a lead weight by various methods. Calculate the average density measured by each group, and the percentage error in each average. Measured densities (g/mL) Group 1 Group 2 Group 3 Trial 1 12.7 11.5 10.9 Trial 2 11.2 11.4 11.3 Trial 3 10.3 11.4 11.1 average density of group 1: g/mL percent error of group 1: average density of group 2: g/mL percent error of group 2: average density of group 3: g/mL percent error of group 3: Which group was most accurate? Which group was most precise? O group 2 O group 1 group 3 O group 3 group 1 O group 2

A handbook lists the density of lead as 11.3 g/mL. Several groups of students are attempting to determine the density of a lead weight by various methods. Calculate the average density measured by each group, and the percentage error in each average. Measured densities (g/mL) Group 1 Group 2 Group 3 Trial 1 12.7 11.5 10.9 Trial 2 11.2 11.4 11.3 Trial 3 10.3 11.4 11.1 average density of group 1: g/mL percent error of group 1: average density of group 2: g/mL percent error of group 2: average density of group 3: g/mL percent error of group 3: Which group was most accurate? Which group was most precise? O group 2 O group 1 group 3 O group 3 group 1 O group 2

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 100E

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