Asked by neha

A 1.994 g sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temp. above 170 C in a crucible until a constant mass is reached. The mass of anhydrous CaSO4 is 1.577g. what is percent by mas of water in the hydrated calcium sulfate salt
Answered by bobpursley
water driven off: 1.994-1.577 g

percentage of water: waterdrivenoff/1.994 * 100
Answered by jesse vallejo
what is Aunilinum?