A water soluble sample containing an unknown amount of sulfate ion weighted 4892g. The sample is dissolved in diluted hydrochloric acid solution. Then barium chloride solution is added causing the formation of barium sulfate. If the formation of barium sulfate itself weighed .8462g, explain what is the mass percent of sulfate ion in the sample?
Ba2+ (aq) + SO42- (aq)→ BaSO4 (s)