## General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal

# Chapter 1 - Matter: Its Properties and Measurement - Exercises - Units of Measurement: 38

#### Answer

d = 7.86 g / $cm^{3}$

#### Work Step by Step

d = 0.284 lb per 1 $in^{3}$ 1 in = 2.54 cm So 1 $in^{3}$ = 2.54 cm * 2.54 cm * 2.54 cm = 16.387064 $cm^{3}$ d = 0.284 lb per 16.387064 $cm^{3}$ 1 kg = 2.205 lb 2.205 lb = 1 kg 2.205 lb = 1000 g 1 lb = 1000 / 2.205 g = 453.5147392 g 0.284 lb = 0.284 * 453.5147392 g = 128.7981859 g d = 128.7981859 g per 16.387064 $cm^{3}$ d = 7.859747536 g per 1 $cm^{3}$ d = 7.859747536 g / $cm^{3}$ Rounding to 3 significant figures gives d = 7.86 g / $cm^{3}$

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