Phosphorus occurs naturally in the form of fluorapatit, CaF2 (dot) 3 Ca3(PO4)2, the dot indicating 1 part CaF2 to 3 parts Ca3(PO4)2. This mineral is reacted with an aqueous solution of sulfuric acid in the preparation of a fertilizer. The products are phosphoric acid, hydrogen fluoride, and gypsum, CaSO4 (dot) 2 H2O. Write and balance the chemical equation describing this process.
I got that the chemical equation would be CaF2 (dot) 3 Ca3(PO4)2 + H2SO4 --> HF + CaSO4 (dot) H2O.
I'm having trouble balancing the equation, the H2O is throwing off the balance of the rest of the equation.