q1 = heat released on condensation of steam at 100 C to liquid water at 100 C.
q1 = mass steam x heat vaporization.
q2 = heat released on cooling from liquid water from 100 C to 18.5 C.
q2 = mass water at 100 x specific heat H2O x (Tfinal-Tinitial)
Total Q = q1 + q2.
what is the change in heat when 23.5g water vapor at 100C condenses to liquid 18.50C
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