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Chemistry

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Determine the energy in K calories needed to convert a one pound block of ice to steam

  • Chemistry - ,

    Is the block of ice at zero C? If so, Convert 1 pound ice to grams, then
    q1 = heat to melt ice to liquid.
    q1 = mass ice x heat fusion(in cal).

    q2 = heat to raise T of water (melted ice) to 100 C.
    q2 = grams x spcific heat(in cal) x (Tfinal-Tintial)

    q3 = heat to convert liquid water at 100C to steam at 100 C.
    q3 = mass water x heat vaporication.

    Total Q = q1 + q2 + q3.

    Then convert calories to kilocalories.

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