Question: You have two chemicals which are A and B and both are solid. You don't know the exact composition of either one of them. You do know that all together, there is some combination of sodium, barium, chloride, and phosphate present. You dissolve both chemicals in water and then mix A and B together. You observe that there is a cloudy precipitate forms in a clear colorless solution (mostly water?)

a.) predict and write two possible equations for the two most likely reactions that could have occurred.

b.) choose and explain why you think one of them is more likely.

thanks in advance to anyone who will help me

forms in a clear colorless solution (mostly water?)
I would suggest that it's water with some aqueous ions in it

What precipitates for you know of?