A sample contained a mixture of cds and zns the amount of, Chemistry

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A sample contained a mixture of cds and zns the amount of

A sample contained a mixture of CdS and ZnS. The amount of CdS was determined by reacting 5.903 g of the sample with an excess of HCl to release H2S from each compound;
CdS(s) + 2 HCl(aq) ® CdCl2 + H2S(g)
ZnS(s) + 2 HCl(aq) ® ZnCl2 + H2S(g)

If the sample reacted completely and produced 1220 mL of hydrogen sulfide at 33.53 °C and 745.7 mm Hg, what was the mass percentage of CdS in the mixture?

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Chemistry: A sample contained a mixture of cds and zns the amount of

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