How do we solve this?
Consider the air over a city (60x25 km). Wind with 18 km/hrspeed brings the fresh air into
the city from the west side of the region (25 km wide). Assume that15 kg/s carbon
monoxide (CO) is emitted from different sources in the city to theair. Assume, also, that the
CO is conservative and uniformly spread all over the area up to analtitude of one kilometer.
Modeling the air over the city as a steady-state system, find theCO concentration of the air
over the city in ppm if the temperature is −20oC and pressure is 1atm.
