q1 = heat needed to raise T of liquid water from 40 C to liquid water at 100 C.
q1 = mass H2O x specific heat H2O x (Tfinal-Tinitial)
q2 = heat needed to convert water at 100 C to steam at 100 C.
q2 = mass H2O x heat vaporization.
Total q = q1 + q2.
By the way, it helps us help you better if you use the same screen name. You don't fool anyone but it confuses us.
How many joules of heat are required to completely covert 85.0 grams of water at 40.0° C to steam at 100°C?
For water: c = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol
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