(A) A gas mixture designed to be breathed by deep sea divers is 5.0% O2, 10.0% N2 and 85.0% He by volume. The air is breathed underwater at 100 feet where the total pressure is 4.1 atm. What is the partial pressure (atm) of oxygen under these conditions?
(B) Calculate the relative rate of diffusion of CO2 compared to SO2.