Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises - Page 114: 3.25b

Answer

16.05%

Work Step by Step

The percentage of oxygen in the substance is determined by the following equation: $\%O = \frac{3\times16}{299}\times100\%=16,05\%$ It is, 3 = number of oxygen atoms 16 = atomic mass of oxygen 299 = molecular mass of codeine
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