Answer:
Explanation:
Na3(Po4)+CaCl2→Ca3(Po4)2+NaCl
Start on the left side with the reactants.
There are 3 Na in Na3(Po4) so there must be 3 Na on the right in products.
That means 3 NaCl which has 3 Cl.
But there are only 2 Cl in CaCl2 on the left.
6 is a common multiplier of 2 and 3 so multiply CaCl2 by 3 and Na3(Po4) by 2 to get the balanced equation:
2 Na3(Po4) + 3 CaCl2 → Ca3(Po4)2 + 6 NaCl
