Calculate how many breaths the average adult male needs to inhale 200.0 g of oxygen gas. The mole fraction of oxygen in air is 0.21, and the average male inhales 0.50 L of air at one time. Assume standard pressure of 1.00 atm and a temperature of 87°F.
Then, for one more point: If the average adult male takes 15 breaths per minute, how long will it take him to inhale the 200.0 g of oxygen?