Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 9 - Problems: 9.49

Answer

-21kJ

Work Step by Step

$\Delta$H = 1072kJ - 248kJ - 745kJ = -21kJ.
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