A mineral containing iron(11) sulfide but no other sulfides is treated with excess hy drochloric acid to produce hy drogen sulfide. If a 3.15 g sample of the mineral yields 448 ml of hydrogen sulfide gas (measured at 0°C and 760 mm), what is the mass percentage of iron (II) sulfide in the sample?. 20.4 a. c. 55.8 b. 35.5 d. 71.4

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Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.