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The following equation is not balanced: Na3PO4+MgCl2→Mg3(PO4)2+NaCl Notice that "PO4" appears in two different places in this chemical equation. PO 3-4 is a polyatomic ion called phosphate . What number should be placed in front of Na3PO4 to give the same total number of phosphate ions on each side of the equation? ?Na3PO4+MgCl2→Mg3(PO4)2+NaCl Express your answer numerically as an integer. 

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