Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 5 - Problems: 5.153

Answer

137.32 g/mol

Work Step by Step

1 he atomic weight of an element on the periodic chart is equal to the mass of one mole of that atom (in grams). One mole of PCl3 has one mole of Phosphorous and 3 moles of Chlorine. P 30.974 g/mol +Cl 3* (35.453)g/mol = molar mass of PCl3 2 30.97g+(35.45g x3)=137.32g/mol
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