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The hydrogen sulfide in a 82.868 g sample of crude petroleum was removed by distillation and...

The hydrogen sulfide in a 82.868 g sample of crude petroleum was removed by distillation and collected in a solution of CdCl2. The precipitated CdS was then filtered, washed and ignited to create CdSO4. Calculate the percentage of H2S in the sample if 0.192 grams of CdSO4 was formed.

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