Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions: 9

Answer

$m_e/m_p=5.446\times10^{-4}$ $83.6\%$ above.

Work Step by Step

From table 2-1: $m_e=9.109383\times10^{-28}\ g$ $m_p=1.672622\times10^{-24}\ g$ their ratio is $m_e/m_p=5.446\times10^{-4}$ the percent error is: $\dfrac{0.001-5.446\times10^{-4}}{5.446\times10^{-4}}\times100\%=83.6\%$ The absolute error is quite small, but the relative error is substantial.
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