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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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

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
O group 1
O group 2
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