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ChemistryIntroductory Chemistry: A Foundation9th Edition
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Why can the length of the pin shown in Fig. 2.5 not be recorded as 2.850 cm?

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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
Chapter 2, Problem 32QAP
Textbook Problem
114 views

Why can the length of the pin shown in Fig. 2.5 not be recorded as 2.850 cm?

Interpretation Introduction

Interpretation:

Why the length of the pin shown in Fig. 2.5 cannot be recorded as 2.850 cm should be explained.

Concept Introduction:

There is always uncertainty is measurement which is limited by human error and the capacity or technical advancement of the measuring device.

Explanation of Solution

The ruler given in Figure 2.5 had marks indicating tenths of a centimeter. Therefore, the uncertainty in the measurement of the pin occurs in the hundredths place. So, the third digit 5 in 2.85 cm is a visual estimate...

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