Question1 (from chapter 5): Emergency response for the rupture of a chemical pipeline is being evaluated. The chemical is estimated to discharge from the pipeline at a rate of 4.53kg/s. The concentration of concern is 100 ppm-anyone downwind who is exposed to a concentration higher than this must be evacuated. Calculate the downwind evacuation distance. The pipeline is at ground level. The molecular weight of the released material is 17.03 . The sunlight is moderate, and the wind speed is 3.5m/s. Assume 1atm,25C, and rural conditions. Question2 (from chapter 6): What is the flash point temperature (in C ) of a 50 -mole percent mixture of methanol and water? Use Appendix B for the flash point temperature for pure methanol and Appendix C for Antoine equations for vapor pressure. Question3 (from chapter 7): Use a sweep through purge to reduce the oxygen concentration from 100% air (21% oxygen) to 1.25% oxygen. The vessel has a volume of 7500 gallons. Determine the ft3 of nitrogen required if the nitrogen contains 0.01% oxygen. Repeat this problem with nitrogen containing 0.02% oxygen and 0.05% oxygen.1