A mineral containing iron(II) sulfide but no other sulfides is treated with excess hydrochloric acid โ Stoichiometry Chemistry Question
Question
A mineral containing iron(II) sulfide but no other sulfides is treated with excess hydrochloric acid to produce hydrogen sulfide. If a 3.15 g sample of the mineral yields 448 mL of hydrogen sulfide gas (measured at 0 หC and 760 mm Hg), what is the mass percentage of iron(II) sulfide in the sample?
A.
20.4
B.
35.5
C.โ Correct
55.8
D.
71.0
๐ฌ
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