Question: Use the vapor pressures of ClF_3 given in the following table to calculate the enthalpy of vaporization using a graphical method or a least squares fitting routine.  A) 25.28kJ/mol  B) 20.32 kJ/mol  C) 22.88 kJ/mol  D) 30.58 kJ/mol. Please choose an answer from [A, B, C, D].
Answer: D