Metallic chromium can be obtained from the mineral chromite (FeCr₂O₄).What is the mass percent of chromium in chromite?

Question

Quizplus · Accepted Answer

The formula for chromite is FeCr2O4. To find the mass percent of chromium, calculate the molar mass of chromite and the molar mass of the chromium content. The molar mass of FeCr2O4 is approximately 223.84 g/mol (55.85 for Fe, 51.9961*2 for Cr, and 15.9994*4 for O). The molar mass of two moles of Cr is approximately 103.9922 g/mol. The mass percent of chromium is then (103.9922/223.84)*100 ≈ 46.46%.

Metallic Chromium Can Be Obtained from the Mineral Chromite (FeCr2O4)

Metallic Chromium Can Be Obtained from the Mineral Chromite (FeCr₂O₄)