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9th Edition

Steven S. Zumdahl + 1 other

Publisher: Cengage Learning

ISBN: 9781337399425

Chapter 2, Problem 32QAP

Textbook Problem

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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.

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...

Introductory Chemistry: A Foundation

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