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 7.2 - Molar Mass and Calculations - Questions and Problems - Page 220: 7.10e

Answer

The molar mass for $(NH_4)_2CO_3$ is equal to 96.09g

Work Step by Step

1. Identify the molar mass for each element in this compound: $N: 14.01g$ $H: 1.008g$ $C: 12.01g$ $O: 16.00g$ 2. Multiply each one of them by their respective subscript number. For the elements that are enclosed in brackets, also multiply them by the subscript of the brackets: $N: 14.01g * 2 = 28.02g$ $H: 1.008g * 4 * 2= 8.064g$ $C: 12.01g $ $O: 16.00g * 3= 48.00g$ 3. Calculate the total sum of these values: $28.02g + 8.064g + 12.01g + 48.00g = 96.09g$
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