Chemistry_1031_day18_030409_actual

Chemistry_1031_day18_030409_actual - GENERAL CHEMISTRY I...

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GENERAL CHEMISTRY I CHE-1031 Dr. Jonathan M. Smith Wednesday, March 4
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Today ± Gases ± P, V, n , T ± Ideal gas law ± Read Chapter 5
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GASES Chapter 5
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Tro, Chemistry: A Molecular Approach 5 Atmospheric Pressure water well application ± pressure is the force exerted over an area ± on average, the air exerts the same pressure that a column of water 10.3 m high would exert ± 14.7 lbs./in 2 ± so if our pump could get a perfect vacuum, the maximum height the column could rise is 10.3 m Area Force Pressure =
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Tro, Chemistry: A Molecular Approach 6 Common Units of Pressure Unit Average Air Pressure at Sea Level pascal (Pa), 101,325 kilopascal (kPa) 101.325 atmosphere (atm) 1 (exactly) millimeters of mercury (mmHg) 760 (exactly) inches of mercury (inHg) 29.92 torr (torr) 760 (exactly) pounds per square inch (psi, lbs./in 2 ) 14.7 2 m N 1 Pa 1 =
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Example 5.1 – A high-performance bicycle tire has a pressure of 132 psi. What is the pressure in mmHg? since mmHg are smaller than psi, the answer makes sense 1 atm = 14.7 psi, 1 atm = 760 mmHg 132 psi mmHg Check: Solution: Concept Plan: Relationship s: Given: Find: psi 14.7 atm 1 mmHg 10 .82 6 atm 1 mmHg 760 psi 14.7 atm 1 psi 132 3 × = × × atm 1 mmHg 760 psi atm mmHg
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Chemistry_1031_day18_030409_actual - GENERAL CHEMISTRY I...

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