Name: student la: 1. A tank contains 45 gal of benzene. If the cover of the drum (drum cover radius=1.5 ft) is left open. Determine the time required to evaporate all the benzene in the tank in hours. The temperature is 85F and the pressure is 1 atm. Fid the concentration of benzene (in ppm) near the container if the local ventilation rate is 1000 ft3/min. Assume poor mixing Support Information: In(psat) = A B C+T' A= 16.0137 B= 3096.52 C= - 53.67 Where psat is the saturation vapor pressure in mm Hg, T is the temperature in K Benzene Molecular Weight=78.11 gm/mole Benzene SG= 0.879 Water density= 62.4 lbm/ft3 1 ft?= 7.4805 gal 1 ft =12 inch 1 = R= 8.314 J mol1 K-1 = 0.082 05 L atm mol-1 K-1 = 8.205 73 m3 atm mol-? K-1 = 1.987 cal mol-1 K-1 = 62.363 mmHg L mol-? K-1 = 1545.348 ft lbflbmol-K-1 = 1.985 Btu lbmol ? R-1 = 10.731 ft psi lbmoll R-1 =