A person is exercising, burning 350 Cal/Hr. While doing this exercise, they breathe deeply, so the volume they take into and out of their lungs is 2 L with each breath. 20% of the air inhaled is oxygen, and 16% of the air exhaled is oxygen. How fast do they have to breath?
Rate of breath for humans = 0.207 L/Cal at a rate of 350 Cal/Hr = 72.45 LO2/Hr.