Scientists have identified over 4000 different chemical compounds in tobacco smoke, of which at least 50 are known carcinogens. Consider an enclosed space with a volume of 12m x 12m x 4m that has 30 people smoking two cigarettes every hour. One of the gases coming out of a cigarette is formaldehyde (CH2O), and it can be assumed that each cigarette emits 1.4 mg of CH2O. Conversion of CH2O to CO2 can be assumed to be first order, and the rate of reaction is (0.40 per hour) x [CH2O]. Fresh air enters the enclosed space at the rate of 800 m3 per hour. Assume the smoke becomes completely mixed with the air, and this smoke-mixed air leaves the enclosed space at the same rate that the fresh air enters.