Chem141 Chapter5 notes

Chem141 Chapter5 notes - Chem chap5 Gases and the Kinetic...

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Chem chap5 Gases and the Kinetic Molecular Theory 5.1 An overview of the physical states of matter 1. Gas volume change with pressure 2. Gas volume change with temperature 3. Gases have relatively low viscosity: flow freely 4. Gases have relatively low densities. 5. Gases are miscible: miscible substances mix with one another in any proportion to form a solution. 5.2 Gas Pressure and Its Measurement Pressure = force / area Laboratory devices Barometer: device used to measure atmospheric pressure. 760 mmHg where it stops, sea level and 0 degree Celsius. independent of tube diameter. Manometers: are devices used to measure pressure of a gas in an experiment. Units of Pressure Pressure = F/ area Pascal (Pa) = 1 N / m^2, N= 1 kg* m/s^2 Larger unit: atm, atmospheric pressure. 1 atm = 101.325 kPa 1 torr = 1 mmHg = 1/760 atm Bar =100 kPa 5.3 The Gas Laws and Their experimental Foundations 4 varibles, P V T and n, all are interdependent. Since V is easiest to measure, 3 laws are based on the effects on V based on changing numbers of P T and n. These 3 laws come
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Chem141 Chapter5 notes - Chem chap5 Gases and the Kinetic...

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