A 6.881 g sample containing magnesium chloride and sodium chloride was dissolved in sufficient water to give 500 mL of solution. Analysis of the chloride content of 50.0 mL aliquot resulted in the formation of 0.5923 g of AgCl. The magnesium in the second 50.0 mL aliquot was precipitated as MgNH4PO4; on ignition, 0.1796 g of Mg2P2O7 was found. Calculate the percentage of MgCl2.6H2O and of NaCl in the sample
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