Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 3 - Matter and Energy - Exercises - Problems: 51

Answer

a) 2.46 x 10^3 J b) 4.16 x 10^-3 Cal c) 32.0 Cal d) 2.35 x 10^5 J

Work Step by Step

1 cal = 4.184 joule and 1 joule = 0.239 cal. a) 588 cal = 588 * 4.184 joule = 2.46 * 1000 J b) 17.4 joule = 17.4 * 0.239 cal = 4.16 * 10^-3 cal c) 134 kJ = 134 * 1000 J = 134 * 1000 * 0.239 cal = 32.0 * 10^3 cal d) 56.2 cal = 56.2 * 4.184 joule = 235.14 joule
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