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Chapter 5a.student version

# Chapter 5a.student version - Physical Characteristics of...

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Gases assume the volume and shape of their containers. Gases have much lower densities than liquids and solids. Gases are the most compressible state of matter. Gases will mix evenly and completely when confined to the same container. 5.1 Physical Characteristics of Gases

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Sea level 1 atm 4 miles 0.5 atm 10 miles 0.2 atm 5.2 Barometer Pressure = Force Area ( force = mass x acceleration) 1 pascal (Pa) = 1 N/m 2 1 atm = 101,325 Pa 1 atm = 760 mmHg = 760 Torr
5.3 As P (h) increases V decreases Apparatus for Studying the Relationship Between Pressure and Volume of a Gas Add Hg Add Hg

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P 1/ V P × V = constant P 1 × V 1 = P 2 × V 2 5.3 Boyle’s Law Constant temperature Constant amount of gas
Example : A sample of Cl 2 gas occupies a volume of 946 mL at a pressure of 726 mmHg. What is the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 154 mL? P 1 × V 1 = P 2 × V 2 P 1 = 726 mmHg V 1 = 946 mL P 2 = 726 mmHg V 2 = 154 mL P 2 = P 1 × V 1 V 2 726 mmHg × 946 mL 154 mL = = 4460 mmHg 5.3 P × V = constant

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Chapter 5a.student version - Physical Characteristics of...

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