Answer
92.3%
Work Step by Step
C2H2
C has a mass of 12 and there are 2 so 24
H has a mass of 1 and there are 2 so 2
24+ 2 = 26
Carbon makes up 24 of this so 24/26 * 100% = 92.3%
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises - Page 114: 3.26a
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