2_Gas_Laws - The Gas Laws: Chapter 1 CHEM 300 Fall 2011 Why...

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Fall 2011 The Gas Laws: Chapter 1 CHEM 300
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Why study gases? • There are many biological applications to the gas laws • The gas laws demonstrate how an empirical relationship can be connected to molecular behavior via a physical model and mathematics
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What is a system? • The system is the particular part of the universe that we are interested in examining. • The surroundings are the rest of the universe. • Identify the following An open system A closed system An isolated system
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The state of the system • Defined as the set of measurable quantities needed to completely describe the system – p,V,T,n • These quantities can be related by an equation of state p = f n , V , T ( )
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Isotherms • There are a set of pressures and volumes that A can exist at and remain at the same temperature. • If system A is in contact with system B, and the systems are in thermal equilibrium, they are at the same temperature.
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Boyle’s Law Boyle’s Law: at constant T and n V 1 p
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Living graph 1 Workbook X002: The perfect gas equation of state Worksheet 2. Boyle's law The pressure of a perfect gas is p = nRT/V . R / (J K -1 mol -1 ) = 8.31447 gas constant n / mol = 1 set the number of moles V initial / m 3 = 2 set the initial volume V final / m 3 = 10 set the final volume In Graph X002.1, we explore the variation of pressure with volume for specific values of the temperature. Set values for temperature (
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2_Gas_Laws - The Gas Laws: Chapter 1 CHEM 300 Fall 2011 Why...

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