Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 7 - Section 7.8 - Energy in Chemical Reactions - Additional Questions and Problems - Page 249: 7.86b

Answer

There is a total of 232 g in 2.25 mole of $NaBr$

Work Step by Step

1. Determine the molar mass of this compound (NaBr), and setup the conversion factors: Molar mass : $Na: 22.99g $ $Br: 79.9g$ 22.99g + 79.9g = 102.9g $ \frac{1 \space mole \space (NaBr)}{ 102.9 \space g \space (NaBr)}$ and $ \frac{ 102.9 \space g \space (NaBr)}{1 \space mole \space (NaBr)}$ 2. Calculate the mass: $ 2.25 \space mole \times \frac{ 102.9 \space g}{1 \space mole} = 232 \space g$
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