I know how to use the formula for osmotic pressure (MRT), however the way that this problem incorporates partial pressure into it just confuses the sh*t outta me. Please help me, before I cut my wrists.
The partial pressure of O2 in air at sea level is 0.21 atm. The solubility of O2 in water is 1.38 x 10-3 M at 20°C and Poxygen = 1.00 atm. Calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20°C and an atmospheric pressure of 662.8 torr.