Question: how much energy in kj is released when 25.0 g?
Answer: I answered the questions: 25.0g[(1.7)(93-78.3)+841+2.44(78-(-10))] and got 27.030 kJ but that isn't correct!! q1 = mass ethanol x specific heat ethanol vapor x (Tfinal - Tinitial) note: Tf is 78.3 and Ti is 93.0. q3 = energy released on lidquid cooling from 78.3 to -10.