A kerosene stove that produces 100 mg/hr of carbon monoxide (CO) is used in a closed room with a volume of 100 m. Fresh air enters the room at the rate of 50 m/hr and stale air leaves at the same rate. Assuming complete mixing and that carbon monoxide is a conservative pollutant (i.e., does not undergo decay), determine the following: (i) (ii) (iii) If the stove was turned on at 6 p.m. at which time the air in the room was clean (i.e., the CO concentration = 0), what would be the CO concentration in the room at 7 p.m.? The steady state CO concentration in the air. At 20C and 1 atm pressure, how does the result compare with the 8-hr ambient standard of 9 ppm for CO?