Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 34 - Think and Explain: 62

Answer

We have to get the hydrogen from somewhere, and we don't get more energy out than we put in.

Work Step by Step

Releasing hydrogen from water costs more energy than the energy released when it is burned. Hydrogen stores energy, and burns without pollution. It is a handy way to store and transport energy, but it's not "energy from nothing".
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