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Sketch shape if: 1.) The beaker had double the amount of ice and water

This graph can be divided into 3 distinct regions, Identify them and explain what is occurring in each segment. Sketch shape if: 1.) The beaker had double the amount of ice and water. Sketch shape if: 1.) The hot plate was set to half power instead of full. Sketch shape if:

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Sketch shape if: 1.) The beaker had double the amount of ice and water

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  1. This graph can be divided into 3 distinct regions, Identify them and explain what is occurring in each segment.

  2. Sketch shape if: 1.) The beaker had double the amount of ice and water

  3. Sketch shape if: 1.) The hot plate was set to half power instead of full

  4. Sketch shape if: 1.) Alcohol was used instead of water

  5. Phase Changes!

  6. Theoretical Results

  7. Latent Heat – Energy per unit mass added or removed during a phase change L = Q/m Q = mL Latent heat of fusion Latent heat of vaporization

  8. Energies 1 g of ice takes 333 J to melt. 1 g of water takes 4.186 J to increase by 1O C. 1 g of water takes 2,260 J to vaporize into steam

  9. How many Joules of energy are needed to melt 157 g of ice? Q = mL M = 157 g L = 333 J/g Q = 157 g (333 J/g) Q = 52300 J

  10. Specific Heat Capacity Amount of heat required to raise temperature of 1 gram by 1 degree.

  11. Heat capacity varies for different materials

  12. Specific Heat Capacity Specific heat capacity = Cp Energy transferred as heat = Q Mass = m Change in temperature = ΔT

  13. Calorimetry -System placed in insulated container of water. -Wait until it reaches thermal equilibrium Heat lost by Sample = Heat gained by Water Qsample = -Qwater CpsampleMsampleΔTsample= -CpwaterMwaterΔTwater

  14. A .5 kg bolt at unknown temp is dropped into a calorimeter containing .15 kg of water with Ti of 21.0 oC. The system reaches a final temperature of 25.0 oC. If the metal has a heat capacity of 899 J/kg oC, find the initial Temp of the metal.

  15. A .225 kg sample of tin at 97.5 oC is dropped into .115 kg of water. The water has a Ti of 21.0 oC. If the tin has a heat capacity of 230 J/kg oC, find the final equilibrium temperature of the system?

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