Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 1 - Chemical Foundations - Exercises: 39

Answer

a) 84.3 millimeters b) 2.41 meters c) 0.00002945 cm = 2.945 $\times$ $10^{-5}$ cm d) 14.45 km e) 235300 millimeters f) 0.9033 micrometers

Work Step by Step

a) 1 cm = 10 mm Thus 8.43 cm = 8.43(10) = 84.3 mm b) $10^{2}$cm = 1 meter Thus 2.41 $\times$ $10^{2}$cm = 2.41 m c) 1 nm = $10^{-7}$cm Thus 294.5 nm = 294.5 $\times$ $10^{-7}$cm = 2.945 $\times$ $10^{-5}$cm d) $10^{3}$m = 1 km Thus 1.445 $\times$ $10^{4}$m = 14.45 km e) 1 m = 1000 millimeters (mm) Thus 235.3 m = 235300 mm f) 1 nm = $10^{-3}$ micrometers Thus 903.3 nm = 0.9033 micrometers
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