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A mineral containing iron(II) sulphide b...

A mineral containing iron(II) sulphide but no other sulphides is treated with excess hydrochloride acid to produce hydrogen sulphide. If a 3.15g sample of the mineral hydrogen sulphide. If a 3.15g sample of the mineral yields 448 mL of hydrogen sulphide gas (measured at `0^(@)C` and 760 mm Hg), what is the mass percentage of iron (II) sulphide inthe sample?

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A mineral containing iron(II) sulphide but no other sulphides is treated with excess hydrochloride acid to produce hydrogen sulphide. . If a 3.15g sample of the mineral yields 448 mL of hydrogen sulphide gas (measured at 0^(@)C and 760 mm Hg), what is the mass percentage of iron (II) sulphide inthe sample?

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