What is the concentration in molarity of carbon dioxide in a carbonated drink if the CO2 partial pressure is 229 kPa? ( Henry's Law Constant for CO2 in water at 25 °C is 3.4 X 102 M/atm) (1 atm = 101.3 kPa) rThe LD50 of nicotine for a child is suggested to be 0.15 mg/kg. If a child of mass 69.6 lbs has absorbed the lethal dose of nicotine, what is the concentration of nicotine (in ppm) in his/her system?