Question

14. In a study of O2 uptake by muscle at high altitude, a physiologist prepares an atmosphere consisting of 79 mol % N2, 17 mol % 1602, and 4.0 mol % O2. (The isotope 180 will be measured to determine the O2 uptake.) The pressure of the mixture is 0.785 atm to simulate high altitude. Calculate the mole fraction and partial pressure of N2 and 1802 in the mixture. (6.0 pts, show working out) Gas Mole Percent Mole fraction Partial Pressure (Pa = Protal * 1a) N2 79 % 1802 4 % 1002 | 17%

Answer 1

Here 14% Since Now 79% mole of Nz moeg 1602 ,4% moeg 1802 and Total pressure 2 0.785 atm. moles are in % so total moeg 00. all gas Gas mole % Imole fraction = | I moleq gas Total Partial Pressure = molefraction & Total preso mole M2 79 % 79/100 Pr₂ = 0.79X 0.785 = 0.620 ahn. =0.79 1802 1802 4% 4/100 = 0.048 0.785 20.04 = 0.0314 alm. = 0.17X 0.785 16or boz 17% 14100 = 0.1335 ahm. 2017