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 115: 3.41b

Answer

2.08 x 10^20 glucose molecules

Work Step by Step

The sample of glucose has 1.250 x 10^21 Carbon atoms. Each glucose molecule has 6 Carbon atoms as can be seen form the formula C6H12O6. Therefore, if we divide the number of Carbon atoms by 6, we find how many glucose molecules we have. This is 1.250x10^21 / 6 = 2.08 x 10^20 glucose molecules

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