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Chapter Twelve (the other half…)

Chapter Twelve (the other half…). Temperature & Heat. Specific Heat Capacity: Temperature Change. Specific Heat : The quantity of energy required to raise the temperature of 1 kg of a substance by 1° C.  Different for each substance C water = 4186 J/ Kg·°C.

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Chapter Twelve (the other half…)

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  1. Chapter Twelve (the other half…) Temperature & Heat

  2. Specific Heat Capacity: Temperature Change Specific Heat: The quantity of energy required to raise the temperature of 1 kg of a substance by 1° C.  Different for each substance • Cwater= 4186 J/Kg·°C

  3. Calorimetry: Procedure to measure energy transfer in the form of heat

  4. Example Problem 128 J/Kg °C A 115 g mass of lead at 100.0 degrees Celsius is placed in a 220 g sample of water at 20.0 ºC . What is the final temperature reached by the two substances?

  5. Energy and Temperature Latent Heat Latent Heat Specific Heat Specific Heat Specific Heat

  6. Latent Heat: Phase Change • Heat of vaporization • Liquid to gas • Heat required to cause a PHASE CHANGE • Heat of fusion • - Solid to Liquid

  7. Energy and Temperature

  8. Boat Fire Problem… • How much energy is required to elevate the temperature of a 1000 gallons of water from 60° F to 212° F and then to vaporize it to steam? 1 Gallon = 0.00379 m

  9. Boat Problem How much energy is required to elevate the temperature of a 1000 gallons of water from 60° F to 212° F and then to vaporize it to steam? 1 Gallon = 0.00379 m

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