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Homework Help: Latent heat

  1. Feb 7, 2006 #1
    how do you slove latent heat problems?

    also is there a easier way to slove thermodyamics problem?

    explain in a way a way that a 9th grader like me can understand.

    thanks
     
  2. jcsd
  3. Feb 7, 2006 #2

    Pengwuino

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    Gold Member

    What kind of problems?
     
  4. Feb 7, 2006 #3
    i need to know the Phase change of objects and how to caculate the Joules of energy needed for the changes.
     
  5. Feb 7, 2006 #4

    russ_watters

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    Staff: Mentor

    Generally, at that level, such problems ask for final temperature and you get the latent heat from a table. But perhaps you could be more specific....?
     
  6. Feb 8, 2006 #5
    yeah

    first off
    "also is there a easier way to slove thermodyamics problem?"
    simply put.....no

    you solve them by using the equation

    Q=cm(delta)T
     
  7. Feb 8, 2006 #6
    i would like to know more about the heat exchange in mixtures and
    example would be like:

    How much heat energy is required to change?
    a) 2.0kg of ice at 0 C to water at 0 C?

    b) 500g of water at 100 C to steam at 100 C?
     
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