When making a plot with the Claussius Clapeyron equation, the enthalpy of vaporization can be calculated from the slope of the line of lnP vs 1/T. The slope between two points is shown below. If only two pressures are measured as P1= 11.72 kPa and P2 = 23.23 kPa, what is the value of (lnP2 - lnP1)