Here's a breakdown:
* CaSO₄: This represents calcium sulfate, the anhydrous (water-free) form.
* ·6H₂O: This signifies the presence of six water molecules (H₂O) associated with each formula unit of calcium sulfate. These water molecules are bound to the calcium sulfate molecule through hydrogen bonding.
So, the complete formula indicates that there are six water molecules for every one molecule of calcium sulfate.