A flask with a volume of 1.50 L, provided with a

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

Problem 62P Chapter 18

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 62P

A flask with a volume of 1.50 L, provided with a stop-cock, contains ethane gas (C2H6) at 300 K and atmospheric pressure (1.013 X 105 Pa). The molar mass of ethane is 30.1 g/mol. The system is warmed to a temperature of 550 K, with the stopcock open to the atmosphere. The stopcock is then closed, and the flask is cooled to its original temperature. (a) What is the final pressure of the ethane in the flask? (b) How many grams of ethane remain in the flask?

Step-by-Step Solution:

Solution 62P Step 1: We can use here the equation, P V = n RT 1 1 1 1 Where R = 8.315 (for C H ) 2 6 P1V 1 1.013×10 ×1.5×103 n =1 RT1 = 8.315×300 = 0.0609 mol The number of moles in the hot gas is, P1V 1 1.013×10 ×1.5×103 n =2 RT 2 = 8.315×550 = 0.0032 mol

Step 2 of 2

Chapter 18, Problem 62P is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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