High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHb level capable of causing a coma can be approximated by the quadratic model Tequals.0002xsquaredminus.316xplus127.9, where T is the exposure time in hours necessary to reach this level and 500less than or equalsxless than or equals800 is the amount of carbon monoxide present in the air in parts per million (ppm). a) What is the exposure time when xequals730? b) Estimate the concentration of CO necessary to produce a coma in 7 hr. Question content area bottom Part 1 What is the exposure time when xequals730?
