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: 3.25e

Answer

27.22%

Work Step by Step

The percentage of oxygen in the substance is determined by the following equation: $\%O= \frac{13\times16}{764}\times100\%=27,22\%$ Knowing that, 13 = number of oxygen atoms 16 u= atomic mass of oxygen 764 u = molecular mass of digitoxin
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