Determine the concentration of dissolved oxygen in the lake in ppm

Question

Dissolved oxygen gas levels in a polluted lake have dipped dangerously low to a concentration of 8.023•10^-4 M

Answer 1

8.023x10^-4 mol/L x 32 g/mole O₂ x 1000 mg/g = 25.7 mg/liter = 25.7 ppm