Exactly 10 mL of water at 25°C was added to a hot iron skillet. All of the water was converted into steam at 100°C. If the mass of the pan was 1.20 kg and the molar heat capacity of iron is 25.19 J/mol∙°C, what was the temperature change of the skillet?

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  1. [mass H2O x specific heat H2O x (Tfinal-Tinitial)] + [mass H2O x heat vap] + [mass pan x specific heat Fe x delta T] = 0
    Substitute and solve for dT. If I didn't goof I get something like 47 C as delta T. The negative sign you get means it is about 47 C LOWER than where it started.
    Watch the units.

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