
Sidney P. answered 05/12/21
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Sodium phosphate is Na3PO4 so molar mass = 3•22.99 + 30.97 + 4•16.00 = 163.94 g. Of this, Na = 68.97g /163.94 g = 42.1%. P is 30.97 /163.94 = 18.9 %. O is 64.00 /163.94 = 39.0%.