In a normal resting person, breathing air at sea level with RQ of 0.8, Pa CO2 of 40mm Hg, Pi O2 of 149 mm Hg and Fi O2 of 21 %. Calculate alveolar partial pressure of oxygen: (A) 100 mm Hg, (B) 90 mm Hg, (C) 120 mm Hg, (D) 80 mm Hg
Answer is A. From Alveolar Gas Equation,
Alveolar partial pressure of Oxygen is