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Homework Help: Ice Melting

  1. Apr 19, 2008 #1
    1. The problem statement, all variables and given/known data
    Ice at 0.0°C is mixed with 8 × 102 mL of water at 28°C. How much ice must melt to lower the water temperature to 0.0°C?


    2. Relevant equations

    Q = mc(delta)T

    3. The attempt at a solution

    c = 4.184 J/g K
    (delta)T = -28C
    V = 800 mL

    I'm not sure what to do since the volume is given and not the mass in this problem.
     
  2. jcsd
  3. Apr 19, 2008 #2

    Hootenanny

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    HINT: What is the density of water?
     
  4. Apr 19, 2008 #3
    ok, but now how do you find how much ice is needed? when density = mass/v and the density of water is 1000kg/m^3 =mass / 800mL
     
  5. Apr 19, 2008 #4

    Hootenanny

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    You first need to work out how much energy is required to change the temperature of 816 mL of water by 28oC.
     
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