The halogen bromine (Br2) is a liquid at room temperature (25oC) and somewhat soluble in water.
A saturated solution of Br2 contains 3.3 x 10-4 g Br2 dissolved in 1 g H2O at room temperature.
A saturated solution of Br2 in water at 0C contains 4.2 x 10-4 g Br2 in 1 g H2O.
Calculate the mole fraction of bromine in water in both solutions.
Calculate the molality of bromine in both solutions presuming that the density of water is 1 g/cm3.