The thiourea in a 1.455-g sample of organic material was extracted into a dilute H2SO4 solution and titrated with 37.31 mL of 0.009372 M Hg2+ via the reaction
4(NH2)2CS + Hg2+ → [(NH2)2CS]4Hg2+
Find the percentage of (NH2)2CS (76.12 g/mol) in the sample.
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