A worker splash fills hexane (MW: 86.18; TLV-TWA: 50 ppm) into a 2642-gallon (i.e., 10 m volume) vessel through a 10-cm diameter filling hole. It takes about 2 hr to fill the vessel at a constant filling rate. The local ventilation rate is 150 m /min, the ambient pressure and temperature are 1 atm (760 mm Hg) and 25C, respectively. Assume average non-ideal mixing factor k for the ventilation condition. The vapor pressure of hexane can be estimated using Antoine equation with the given constants: B In(P-t) = A - where T is in K and Psat is the saturation pressure (mm Hg) C+T Antoine constants for hexane: A = 15.8366, B = 2697.55 and C = -48.78 Estimate the local concentration of the hexane in ppm. What observations you can make regarding worker's exposure to hexane? 1