Fool's Gold is the mineral pyrite (FeS₂). What is the mass percent of sulfur in pyrite? A)36.44% B)46.59% C)49.09% D)53.41% E)63.56%

Question

Quizplus · Accepted Answer

To find the mass percent of sulfur in pyrite (FeS₂), calculate the molar mass of FeS₂: Fe = 55.85 g/mol, S = 32.07 g/mol. Molar mass of FeS₂ = 55.85 + 2(32.07) = 119.99 g/mol. Mass percent of sulfur = (2 * 32.07 / 119.99) * 100% = 53.41%.

Fool's Gold Is the Mineral Pyrite (FeS2)

Fool's Gold Is the Mineral Pyrite (FeS₂)