8. Determine the dose in mg/kg-day for an adult female, adult male, and a child that inhale air every day that contains a toxic chemical at a concentration of 2 g/m. 9. Calculate the non-carcinogenic risk for the male, female and child associated with the exposure in problem 9 if it occurred over a period of 10 years (RfD = 0.0001 mg/kg-day; AT = 70 yrs). Does this exposure present a potential concern?