The presence of the radioactive gas radon (rn) in well wa- ter presents a possible health hazard in parts of the united states. (a) assuming that the solubility of radon in water with 1 atm pressure of the gas over the water at 30 °c is 7.27 * 10-3 m, what is the henry’s law constant for radon a sample consisting of various gases contains 3.5 * 10-6 mole fraction of radon. this gas at a total pressure of 32 atm is shaken with water at 30 °c. calculate the molar concentration of radon in the water.