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White Board. 1. Octet Rule. Thermochemistry Problems q = m T C p. Set up the following problems q = M = T = C p =. What is the specific heat of a substance that has a mass of 25.0 grams and requires 525.0 calories to raise the temperature by 15 o C ?.

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White Board

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  1. White Board 1. Octet Rule

  2. Thermochemistry Problemsq = m T Cp • Set up the following problems • q = • M = • T = • Cp =

  3. What is the specific heat of a substance that has a mass of 25.0 grams and requires 525.0 calories to raise the temperature by 15 oC ?

  4. 2. Suppose 100.0 g of ice absorbs 1255 J of heat. What is the corresponding temperature change? Cp of ice is 2.1J /(g X oC)

  5. 3. How many joules of heat energy are required to raise the temperature of 100.0 g of aluminum by 120.0 oC ? The specific heat of aluminum is 0.90 J/(g X oC )

  6. 4. A 20 gram sample of an unknown metal requires 500 calories of heat to raise the temperature 100 oC. What is the specific heat of the metal?

  7. 5. A strip of metal weighing 30 grams looses 400 Joules of heat. What is the temperature change when the specific heat is 0.420 J/ (g X oC) ?

  8. 6. What is the mass of substance that looses 500 c of heat while changing temperature from 30 oC to 10 oC. Use .5 c/ (g X oC ) as the specific heat.

  9. 7. A 50 gram sample is heated from 20 oC to 50 oC. How many Joules of heat are absorbed? Use 2.0 c / (g X oC) as specific heat.

  10. 8. What is the final temperature when a 100g sample of a metal with a specific heat of .30 J/ (g X oC) looses 5000 Joules of heat. The initial temperature is 2000 oC

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