A hydrated salt of calcium sulfate, CaSO4, a 1.803-g sample of gypsum, is heated in a crucible until a constant mass is reached. The mass of the anhydrous CaSO4 salt is1.426- g. Determine the percent by mass of water in the hydrated calcium sulfate salt. Also, determine the moles of water removed and the moles of anhydrous CaSO4 remaining in the crucible. And, finally, determine the formula of the hydrated calcium sulfate; that is, determine the whole-number mole ratio of calcium sulfate to water?