Comparing various ways to calculate the heat of vaporization for propane at t = 280 k. calculate the heat of vaporization using: a. residual enthalpies from srk. you can use either excel or mathematica for this problem and include your workbook or notebook. b. clausius clapeyron equation using t = 280 k and to = 250 k and for t = 280 and to = 300 k. c. look up the ahvap on the nist site. d. compare and contrast the heat of vaporization values that you obtained with the various calculations. state the assumptions for each calculation. which was easier to use? which one do you think is best to use?