Gradebook ORION PRINTER VERSION Chapter 19, Problem o48 when 27.8 J was added as
ID: 1611677 • Letter: G
Question
Gradebook ORION PRINTER VERSION Chapter 19, Problem o48 when 27.8 J was added as heat to a particular ideal gas, the volume of the gas changed from 50.1 cm3 to 73.3 cm3 while the pressure remained constant at 1.08 atm. (a) By how much did the internal energy of the gas change? If the quantity of gas present is 3.29 x 10 3 moi, find the molar specific heat of the gas at (b) constant pressure and Units (a) Number Units (b) Number (c) Number click if you would like to show work for this question: open show work sa ow MINT TUTORIAL UNK SAMPLE PROBLEM LINK TO TEXT Question Attempts: o of used SAVE FOR LATER SUBMTT ANSWER 6 Copyright 2000-2017 by John Wiley & Sons, inc. or reiated companies. Ali rights reserved. version 4.22.34 All Rights Reserved. A Division of lohn.wilty.AsonsExplanation / Answer
Heat = 27.8 J
Work done by gas = P delta V = 1.08*(73.3-50.1)*101325*10^-6 J = 2.54 J.
change in Internal energy = heat-workdone=27.8-2.54 = 25.26 J
This change in internal energy is at constant pressure, hence nCp delta T = 25.26
Cp = 25.26/(n delta T) = 25.26*R/P delta V = 25.26*8.314/(2.54 ) = 82.68 J/mol K
Cv = Cp-R = 82.68-8.314 = 74.37 J/ mol K
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