Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 5 - Section 5.5 - Applications of the Ideal Gas Law: Molar Volume, Density and Molar Mass of a Gas - For More Practice - Page 213: 5.7

Answer

M = 44.0 g/mol

Work Step by Step

The density of a gas is 1.43 g>L at a temperature of 23 °C and a pressure of 0.789 atm d = 1.43 g/L T = 23 + 273.15 = 296.15 K P = 0.789 atm d = PM/RT M = dRT/P M= 1.43 x 0.08206 x 296.15 / 0.789 = 44.0 g/mol
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