Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 3 - Sections 3.1-3.12 - Exercises - Problems by Topic - Page 132: 72b



Work Step by Step

Calculate the total mass of nitrogen in the compound. Then calculate the molar mass of the entire compound. Divide the total mass of nitrogen by the total molar mass of the compound. Then, multiply by 100% to determine the percent composition by mass. Molar Mass of $N$: $14.0067g/mol$ Molar Mass of $NO$: $14.067g/mol+15.9994 g/mol =30.0061g/mol.$ % $N=(14.01g/mol÷30.01g/mol)×100$% $=46.68$%
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