Lab8-9 - Oregon State University PH 202 Winter 2010 Lab 8-9...

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Oregon State University PH 202 Winter, 2010 Lab 8-9: Thermodynamics (take-home) This take-home lab is due on Monday, March 8 at 5:00 p.m. (turn it in to your Lab TAʼs box outside of Wngr 234) . This lab covers topics from Chapters 11 and o 1 d 2 of the text. 1. In each of the four scenarios below, a F xed amount of monatomic ideal gas undergoes certain changes to its pressure, volume and temperature. ±or each scenario, sketch its changes on a P-V graph; keep to scale to help you see the relationships using as large a scale as possible. (But plan ahead—leave room for all processes on each graph: donʼt start your graphing until you know all pressure and volume values for that scenario!) In each scenario, label the starting point of the gas as initial pressure P i , initial volume V i , and initial tempera- ture T i . Then draw a series of connected curves, each of which represents the gas undergoing the described change. At the end of each change (i.e. at each vertex of your graph), write the value of the temperature of the gas at that point—in terms of T i . ±or example, the temperature might be 2 T i or (1/3) T i , etc. (a) The volume is doubled at constant pressure, then it is returned isothermally to its original volume, then the pressure is halved, keeping the volume constant. Is the thermal energy change of the gas for this
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Lab8-9 - Oregon State University PH 202 Winter 2010 Lab 8-9...

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