What is the molar concentration of oxygen in the lake at 25 °C? The value of Henry’s Law constant for O 2 4dissolved in water at 298 K is 4.34*10 atm. Assume the density of the lake is 1 g/ml. STEP-BY-STEP QUESTIONS 1. What equation did we learn in class that has to do with the material in this problem? Henry’s Law!