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II. Charles’s Law A. relationship between volume and temperature

II. Charles’s Law A. relationship between volume and temperature 1. T and V directly proportional (if P held constant) 2. the T of gases is examined in the Kelvin scale (because there are no negative numbers and 0 K is a theoretical value) 3. 0 K is called absolute zero –

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II. Charles’s Law A. relationship between volume and temperature

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  1. II. Charles’s Law • A. relationship between volume and temperature • 1. T and V directly proportional (if P held constant) • 2. the T of gases is examined in the Kelvin scale (because there are no negative numbers and 0 K is a theoretical value) • 3. 0 K is called absolute zero – • a. to convert from Celsius to Kelvin, add 273 • B. Formula is- V1/T1 = V2/T2 • Ex. A gas sample at 40.0o C occupies a volume of 2.32 L. If the temperature is raised to75.0o C , what will the volume be, assuming pressure remains constant? • * Change T to Kelvin

  2. III. Gay-Lussac’s Law • A. relationship between P and T • B. P and T are directly proportional (at constant V) • 1. T must be in kelvin • C. Formula is: P1/T1 = P2/T2 • Ex. The pressure of a gas in a tank is 3.20 atm at 22o C. If the temperature rises to 60.0 o C, what will be the gas pressure in the tank? • * change T to Kelvin

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