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Chemistry

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Calculate the heat (in kJ) required to change 40.0g of ice at -30.0 deg C to steam at 150.0 deg C?

  • Chemistry - ,

    Two formulas you need.
    Within a phase is
    mass x specific heat x (Tfinal-Tinitial)
    Use that formula for ice at -30 to ice at zero, for water at zero to water at 100, for steam at 100 to steam at 150.

    At the phase change.
    mass x heat fusion for melting.
    mass x heat vaporization for boiling.

    Then add each part to find the total.

  • Chemistry - ,

    -760kJ cal

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