Question: Please explain every step- I'm really lost. Thank you! 1.17 Consider the air over a city to be a box 100km on a side that

Please explain every step- I'm really lost. Thank you!

1.17 Consider the air over a city to be a box 100km on a side that reaches up to an altitude of 1.0km. Clean air is blowing into the box along one of its sides with a speed of 4m/s. Suppose an air pollutant with rate constant k=0.2/hr is emitted into the box at a total rate of 10.0kg/s. Find the steady-state concentration if the air is assumed to be completely mixed. If the windspeed in Problem 1.17 suddenly drops to 1m/s, estimate the concentration of pollutants two hours later

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