What products are formed when aqueous solutions

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Problem-What products are formed when aqueous solutions of calcium bromide and potassium phosphate are mixed?

I have the answer which is Ca3(PO4)2 and KBr

I don't know where the 3 comes in calcium on the answer. I'm just super confused I don't know if it's a balancing mistake or something I am overlooking. Any help would be much appreciated.

I just need a general explanation of it please- Thanks!

Reference no: EM13699956

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