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Chemistry

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The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron, the heat required to convert iron from a solid to liquid at its melting point, is 63.7cal/g. Iron melts at 1530 C. How much heat must be added to 2g of iron at 25c to completely melt it?

  • Chemistry - ,

    q1 = heat added to raise T of Fe from 25C to 1530 C.
    q1 = mass Fe x specific heat Fe x (Tfinal-Tinitial)

    q2 = heat to melt Fe at 1530C.
    q2 = mass Fe x heat fusion/g

    Total Q = q1 + q2

  • Chemistry - ,

    458.5cal

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