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Homework Help: Ice mixed with water. help pls.

  1. Aug 19, 2010 #1
    1. The problem statement, all variables and given/known data

    a 2kg of ice at -2 deg celsius is mixed with 1.7kg of water at 27 deg celsius

    2. Relevant equations

    1. will all the ice melt in water?
    2. if all the ice melted in water determine the resulting temperature of the mixture,
    if not determine the amount of ice that does not melt

    3. The attempt at a solution

    the answers are: 1.) not all ice melted in water>> but i do not know why, in the first place i do not know what am i looking for or how to prove it. do i need to solve for the amount of ice that will melt? or the amount of heat required to melt the ice? how?

    2.) the answer is 1.35kg. how and why? i'm using the formula Qgain = Qloss, but i think i'm lost right now, 'cause i can't even understand the concept of the question in number 1. pls help me. :(
     
  2. jcsd
  3. Aug 19, 2010 #2

    Borek

    User Avatar

    Staff: Mentor

    Do you know what heat balance is and how it is calculated?

    What happens to the ice (at -2°C) when you put it in a 27°C water?

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