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 7.1 - The Mole - Questions and Problems - Page 216: 7.5a

Answer

There is a total of 6.00 moles of $H$ in 2.00 moles of $H_3PO_4$

Work Step by Step

1. Identify the conversion factor for $H_3PO_4$ moles and $H$ moles. - Each $H_3PO_4$ molecule has 3 hydrogens (H). Therefore: $\frac{1mole(H_3PO_4)}{3moles(H)}$ and $\frac{3moles(H)}{1mole(H_3PO_4)}$ 2. Calculate the amount of $H$ (in moles), in $2.00$ moles of $H_3PO_4$: $2.00 moles(H_3PO_4) \times \frac{3moles(H)}{1mole(H_3PO_4)} = 6.00 $ moles $ (H)$
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