Gasoline-contaminated ground water from a nearby gas station has diffused underneath a house. Sticking a probe 3 meters into the floor in the basement, you find that the concentration of the hydrocarbons is 9 × 10−5kg/m3. Assume the diffusion coefficient is 10−6m2/s and the basement has no hydrocarbons present.
a. Calculate the flux density transported into the basement by diffusion.
b. If the basement has a floor space of 200 m2, what is total mass flux?
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