Question

Consider a box model for an air shed over a city 1.00 X 105 m on a side with a maximum mixing depth of 2500 m. Winds with no SO2 blow at a speed of 4.00 m/s against one side of the box. SO2 is emitted within the box at a rate of 19.5 kg/s. Since emissions of SO2 only occur on weekdays, by Monday morning at 6 am, the concentration of SO2 is negligible. If the emission of SO2 begins at 8 am on Monday, what is the concentration of SO2 at noon on the same day? Give your answer in units of ?g/m3. Assume SO2 is conservative