Can anyone balance: barium chloride + silver phosphate yields silver chloride + barium phosphate ?
You mean balance:
a BaCl2 + b Ag3PO4 → x AgCl + y Ba3(PO4)2
It works better with chemical symbols. It takes a little work, but you should be able to find the correct values of a, b, x, and y to make a balanced equation.
Hint: since you have 3 Ag and 2 Cl on the LHS, the x on the RHS is going to need a common multiple of 2 and 3 to balance.
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