3.4. A gas oil has the following TBP distillation data Volume % TBP (C) 216 243 268 0 10 30 50 70 90 95 100 284 304 318 327 334 It also has an average boiling point of 280 C and an average density of 0.850 g/cm. (a) Split this gas oil fraction into five pseudo-components. Calculate Te, Pe and for each pseudo-component. (b) Calculate T., P. and for the whole gas oil fraction. (c) Calculate the enthalpy of this gas oil fraction at 400 C using the Lee- Kessler correlation with a reference state of ideal gas at 273.15 K.