A manufacturing process uses the powerful solvent acetone. One phase of the process is to dry out the acetone in a drying area. The drying area evaporates 2 gallons of acetone per hour. Every gallon...

A manufacturing process uses the powerful solvent acetone. One phase of the process is to dry out the acetone in a drying area. The drying area evaporates 2 gallons of acetone per hour. Every gallon of liquid acetone produces 41 cubic feet of vapor. Calculate the amount of ventilation (cubic feet/hour) needed to maintain vapor concentration below the burnable level. How many times per hour would the ventilation system exhaust a room 9 feet by 12 feet with a ceiling height of 10 feet?