Lec-22-Chap-10-1_1

Lec-22-Chap-10-1_1 - Professor Carlos Simmerling CMM Bldg,...

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1 Professor Carlos Simmerling • CMM Bldg, Room G80 • Graduate Chemistry Bldg, Room 579 • Office hours listed on blackboard Chapter 10 Gases and the Atmosphere Common Gases and their Uses Earth’s Atmosphere Composition of Dry Air Properties of Gases • can be compressed • exert pressure on whatever surrounds them • expand into whatever volume is available • easily diffuse into one another • can be described in terms of their temperatures and pressure,the volume occupied, and the amount (number of molecules or moles) present
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2 Properties of Gases Compression of Gases Compression of Gases Gas Pressure Press ure pressure = force/area Averaged over many collisions! Press ure
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3 Pressure units pressure = force/area force = mass × acceleration 1 Standard Atmosphere = 1 atm 1 atm = 760 mm Hg(exactly) 760 mm Hg(exactly) = 760 torr 760 torr = 101.325 kPa 100 kPa = 1 bar Torricellian Barometer Kinetic Molecular Theory: Gases particles in continuous, random, rapid motion collisions between particles are elastic
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This note was uploaded on 03/28/2009 for the course CHE 131 taught by Professor Kerber during the Fall '08 term at SUNY Stony Brook.

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Lec-22-Chap-10-1_1 - Professor Carlos Simmerling CMM Bldg,...

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