Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 10 - Chemical Quantities - Standardized Test Prep - Page 343: 5

Answer

A

Work Step by Step

Nitrogen has a mass of 14 grams, and oxygen has a mass of 16 grams. The compound N2O has an entire mass of 44 grams, in which 28 grams belongs to Nitrogen. 28/44=0.64*100=64%.
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