Vehicle exhaust flow rate can be estimated based on mass air flow and the air-to-fuel ratio, can sometimes be obtained directly from the obd interface, or can be measured using an exhaust flow meter. suppose that vehicle exhaust flow rate is 2.45 gmol/second. if the vehicle exhaust includes 265 ppm no, what is the no emission rate in each of the following units: a. g/sec b. g/mile (assume that the vehicle is driving at 55.0 miles per hour)