College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 13 - Problems - Page 498: 29


$1~u = 1.66\times 10^{-27}~kg$

Work Step by Step

The mass of a $C_{12}$ atom is $12~u$ and one mole of $C_{12}$ has a mass of $0.012~kg$. We can find the conversion factor from atomic units to kg: $(6.02\times 10^{23})(12~u) = 0.012~kg$ $1~u = \frac{0.012~kg}{(6.02\times 10^{23})(12)}$ $1~u = 1.66\times 10^{-27}~kg$
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