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How to find the heat

  1. Jun 17, 2008 #1
    Does anybody know the formula to find the amount of heat that is required to turn a mass of room temperature water into steam at 100degC?

    I know it has something to do with the specific heat capacity of water.
    But apparently there is also one that involves heat of vaporization of water.... ?

    I'm doing a question that I'm trying to find the heat, and values of the heat capcity and heat of vaporization is given as well as temperature and mass.

    I know this formula: Q= m*C*T, but I don't know how to use heat of vaporization...

    THank you.
  2. jcsd
  3. Jun 17, 2008 #2


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  4. Jun 17, 2008 #3


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    The amount of heat needed would be= Heat needed to raise temp. to 100C + Heat needed to change the phase of the water from liquid to gas

    the latter will have the latent heat of vaporization
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