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Effusion

Bob Jones PPT Notes -- Chapter 10a

Subject: 
Chemistry
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Physics
thermodynamics
Chemistry
Gases
Fluid dynamics
Atmospheric thermodynamics
Underwater diving
Effusion
Kinetic theory
Pressure
Vacuum
Molar mass
Environment

Properties of Gases Kinetic Theory of Gases Many independent particles Random motion at high speed Separated by great distances Kinetic Theory of Gases Interact only when they collide 5. Elastic collisions Physical Properties of Gases Diffusion Effusion Permeability Compressibility Expansibility Diffusion spontaneous mixing due to particle motion Effusion gas particles passing through a tiny opening into an evacuated area Both diffusion and effusion are directly related to the speed of the gas molecules. rate of effusion for gas 1 Graham?s Law of Effusion rate of effusion for gas 2 = molar mass2 molar mass1 molar massN = 28.02 g/mol Sample Problem 1 Calculate the ratio of effusion rates between nitrogen (N2) and Argon (Ar). molar massAr = 39.95 g/mol rate of effusion for gas 1

Gas Laws Notes

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Chemistry
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Units of pressure
Measurement
Physics
Atmospheric thermodynamics
Thermodynamics
Underwater diving
State functions
Torr
Pascal
Pressure
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Pressure
Volume
Temperature
Charles' Law
Properties of Gases
Effusion
Graham's Law of Effusion

Gas Laws Properties of Gases Fluids Low density Highly compressible Completely fill a container and exert pressure in all directions Pressure the force exerted per unit of area Units of pressure: kilopascal (kPa) atmosphere (atm) torr (torr) millimeters of mercury (mmHg) pounds per square inch (psi) 1 atm = 760 mm Hg = 760 torr = 101 kPa Pressure and Volume How are pressure and volume of a gas related? Think about the demos yesterday. What are the words we use for this relationship? What would a graph look like? Pressure and Volume Boyle?s Law: the volume of a certain mass of gas at constant temperature is inversely proportional to the pressure applied to the gas P1V1 = P2V2 P V
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