A 0.6447-g portion of manganese dioxide was added to an acidic solution in which 1.1402 g of a chloride-containing sample was dissolved. Evolution of chlorine took place as a consequence of the following reaction: MnO (s) + 2Cl (aq) + 4H+ (aq) Mn2+ (aq) + Cl (g) + 2HO (1) After the reaction was complete, the excess MnO2 was collected by filtration, washed, and weighed, and 0.3521 g was recovered. Calculate the chloride content in the sample as % (w/w) sodium chloride.