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Specific Heat Problem and boiling water

  1. Nov 29, 2009 #1
    1. The problem statement, all variables and given/known data
    140 grams of boiling water (temperature 100° C, heat capacity 4.2 J/gram/K) are poured into an aluminum pan whose mass is 1100 grams and initial temperature 24° C (the heat capacity of aluminum is 0.9 J/gram/K).
    After a short time, what is the temperature of the water?


    2. Relevant equations
    Q=mc delta t


    3. The attempt at a solution

    140g(4.2J/K/gram)(T-100) = 1100g(0.9 J/K/gram)(24-T)
    588T-58800 = 23760 - 990 T
    588T + 990 T = 23760 + 58800
    1578 T = 82560
    T= 52.319

    Am I doing this right?
     
  2. jcsd
  3. Nov 29, 2009 #2

    Delphi51

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    Homework Helper

    Looks good to me, clutch.
     
  4. Nov 29, 2009 #3
    Alright and when im determining the temperature am i subtracting 100-52.319 or no?
     
  5. Nov 29, 2009 #4

    Delphi51

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    Homework Helper

    No, 52.319 is the final answer. 100-52.319 would be the change in temperature of the water.
     
  6. Nov 29, 2009 #5
    oh ok thanks for clearing that up
     
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