CHAP12_new - Gases Chapter 12 Chapter 12 1 Characteristics...

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Chapter 12 1 Gases Gases Chapter 12 Chapter 12
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Chapter 12 2 Characteristics of Gases Characteristics of Gases - Expand to fill a volume (expandability) - Compressible - Readily forms homogeneous mixtures with other gases
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Chapter 12 3 Pressure Pressure Pressure - force acting on an object per unit area. A F P =
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Chapter 12 4 Pressure Pressure - Conversion Factors - 1 atm (atmosphere) = 760 mmHg - 1 atm (atmosphere) = 760 torr - 1 atm (atmosphere) = 1.01325 × 10 5 Pa (Pascal) - 1 atm (atmosphere) = 101.325 kPa (Kilopascal)
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Chapter 12 5 The Gas Laws The Gas Laws - There are four variables required to describe a gas: - Amount of substance: moles - Volume of substance: liters - Pressures of substance: atmospheres (atm) - Temperature of substance: kelvin - The gas laws will hold two of the quantities constant and see how the other two vary.
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Chapter 12 6 The Gas Laws The Gas Laws The Pressures-Volume Relationship: Boyle’s Law The Pressures-Volume Relationship: Boyle’s Law Boyle’s Law - The volume of a fixed quantity of gas is inversely proportional to its pressure at constant temperature. ) and (constant 1 T n V P α
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7 The Gas Laws The Gas Laws The Pressures-Volume Relationship: Boyle’s Law The Pressures-Volume Relationship: Boyle’s Law Boyle’s Law - The volume of a fixed quantity of gas is inversely proportional to its pressure at constant temperature. 2
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CHAP12_new - Gases Chapter 12 Chapter 12 1 Characteristics...

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