Hyperbaric oxygen therapy is used to treat patients with carbon monoxide poisoning as well as to treat divers with the bends. In hyperbaric oxygen therapy, a patient is placed inside a 7.0-ft cylinder with a 3.0-ft diameter, which is then filled with oxygen gas to a total pressure of 2.50 atm. Assuming the patient takes up 32.0% of the chamber’s volume, what volume of O₂(g) from a gas cylinder at 25°C and 95 atm is required to fill the chamber to a total pressure of 2.50 atm at 25°C? Assume the hyperbaric chamber initially contains air at 1.00 atm before O₂(g) is added.