The equivalence ratio of a combustion process is often determined by extracting a sample of the exhaust gas and measuring the concentrations of major species. in a combustion experiment using isooctane (c3h18), continuous gas analyzers monitor the exhaust gas and measure a co2 concentration of 6 percent by volume and a co concentration of 1 percent by volume. the sample gas is not dried before the measurements are made. a. what is the equivalence ratio associated with this combustion process? assume the process is overall lean. b. if an o2 analyzer was monitoring the exhaust gas, what would it be reading?