How many kJ of heat energy would be absorbed when 175.0g of ethanol, C2H5OH, vaporizes at its boiling point, given the enthalpy of vaporization of ethanol is 39.3
kJ/mol?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?