Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 5 - Section 5.1 - Energy and Energy Changes - Checkpoint - Page 191: 5.1.3

Answer

c) 3025.1 cal

Work Step by Step

723.01 J = $723.01 J\times\frac{4.184cal}{1 J}$ = 3025.1 J. 4.184 is an exact number because it is a defined one. Exact number does not limit number of significant figures. So, we can consider the answer to five significant figures.
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