To reduce air pollution, gasoline filling stations are installing scavenger systems to remove the gasoline vapors ejected from the automobile tank during the filling operation. This is accomplished by an elephant trunk ventilation system installed as part of the filler hose. Assume an average automobile tank size of 14 gal. If the vapor in the tank is saturated with gasoline vapor at a vapor pressure of 4.6 psi at these conditions, how many gallons of gasoline are recovered free for the station owner with each fill-up? For 10,000 gal of delivered gasoline, how many gallons are recovered? The molecular weight of gasoline is about 94, and its liquid specific gravity is 0.7