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Nickel in Coffee Cup Calorimeter (Small Error)

  1. Nov 7, 2011 #1
    1. The problem statement, all variables and given/known data

    nickel weights 28.2g and is heated to 100°C
    150g water at 13.5°C
    After the nickel is placed in the water, the final temperature of the metal and water is 25°C.
    Find the specific heat capacity of nickel

    2. Relevant equations

    Q=mcΔT


    3. The attempt at a solution

    Qwater=mcΔT
    =150g x 4.181J/°C x (25°C-13.5°C)
    =7212.225J

    Qnickel+Qwater=0
    Qnickel=-Qwater=-7212.225J
    mcΔT=-7212.225J
    c=(-7212.225J)/(28.2g)(25°C-100°C)
    =3.41 J/g°C

    I googled the c value for nickel and it's 0.44 at 25 degrees Celsius. I'm not sure where I went wrong. Thanks in advance for helping
     
  2. jcsd
  3. Nov 8, 2011 #2

    Borek

    User Avatar

    Staff: Mentor

    Your result is consistent with these numbers - so it is either error in the book, or the question was asked by someone not knowing the real value, or you made a mistake copying the question.
     
  4. Nov 8, 2011 #3

    epenguin

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    Homework Helper
    Gold Member

    Please check but I think that if the initial water temperature were 23.5° instead of the slightly odd-sounding 13.5° it comes out about right.
     
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