1. The problem statement, all variables and given/known data I have .021 moles of H2o and .0137 CaSO4 annhydrous. What is the formula for hydrated calcium? 2. Relevant equations CaSo4*H20-->CaSo4 +H2o 3. The attempt at a solution we divide .0137 by.021 and get .65. We then multipy that by three and get: 2CaSo4*1H20-->2CaSo4 +1H2o Right?