Underwater, the pressure increase by 1 bar for every 10 m of depth. While a scuba diver breathes pressurized air in which the partial stress of N2(g) exceeds 4 bar, the result is nitrogen narcosis, which is similar to alcohol intoxication. Explain what is the maximum mole percent of N2 in an air mixture that could be utilized by divers at depths up to 100.0 m below sea level without undue risk of nitrogen narcosis?