ok well so far, I've recognized that CaSO4 is highly soluble in water. I would have to evaporate almost all of it before I would get any precipitation.
If I ignore supersaturation, a solute will begin to precipitate out of solution when its concentration exceeds its solubility.
But how do I include the math part to this quesiton?
*Also, thanks to Geodome, I need the solubility product constant as well, which is: 4.93 x 10^-5