Chemistry: Molecular Approach (4th Edition)

by Tro, Nivaldo J.

Published by Pearson

ISBN 10: 0134112830

ISBN 13: 978-0-13411-283-1

Chapter 5 - Section 5.4 - The Ideal Gas Law - For More Practice - Page 211: 5.6

Answer

P = 976 mmHg

Work Step by Step

Molar mass of He = 4.0 g/mol n = 0.133 / 4 = 0.03325 T = 32 + 273.15 = 305.15 K V = 0.648 L Using PV = nRT (for R = 0.08206( P = .03325 x .08206 x 305.15 / 0.648 P = 1.285 atm 1 atm = 760 mmHg 1.285 atm = 760 x 1.285 = 976 mmHg

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