General Chemistry (4th Edition)

Published by University Science Books
ISBN 10: 1891389602
ISBN 13: 978-1-89138-960-3

Chapter 2 Atoms and Molecules - Problems - Page 73: 35

Answer

Molecular mass of Sucrose = 12 x atomic mass of Carbon + 22 x atomic mass of Hydrogen + 11 x atomic mass of oxygen = (2 x 12.0107) + (22 x 1.00794) + (11 x 15.9994) = 342.2965 Mass %age of Carbon = 24.0214/342.2965 x 100 = 42.1063 % Mass %age of Hydrogen = 22.17468/342.2965 x 100 = 6.4782% Mass %age of Oxygen = 175.9934/342.2965 x 100 = 51.4155%

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