Gypsum (CaSO4) can be used as a water treatment additive to reduce the level of silt and mud build up by flocculating the clay. In a pilot experiment, 1000g of gypsum is added to 1m3 pure water. Determine the amount of sulfate (SO42), in mg/L, dissolved in the water and the amount of gypsum precipitate that remains, in mg/L, undissolved. The solubility constant of CaSO4 in water at 25C is given as K=1.0104.58. [15 Marks]