Q.7: Given that dry air, which is 78.08% by mass N2(g), and 20.95% by mass O2(g) (with the rest being other gases), and has a density of 1.146g/L at 740 torr and 27°C, determine:
A) The partial pressure of N2(g) and its mole fraction in the air
B) The partial pressure of O2(g) and its mole fraction in the air.