1) Before heading to the summit of Mt. Everest, climbers typically spend 6 weeks at the base camp acclimatizing to the altitude. The North Base Camp in Tibet is located at 5,150 meters (16,900 ft) above sea level and the barometric pressure is ~365 mm Hg.

a. What is the PO2 of moist air at the North Base Camp?

b. In order to breathe in as much oxygen as you do at sea level (assume 760 mm Hg barometric pressure), by what factor would you need to increase your total ventilation?