Zircon is a mineral with the empirical formula ZrSiO₄. If all the zirconium is ⁹⁰Zr, all the silicon is ²⁸Si, and all the oxygen is ¹⁶O, what mass of oxygen is present in 10. g of zircon A) 0.88 g B) 1.2 g C) 1.8 g D) 3.5 g E) 5.4 g

Question

Quizplus · Accepted Answer

The molar mass of ZrSiO4 is approximately 183.3 g/mol. Oxygen's contribution is 4 * 16 = 64 g/mol. The mass fraction of oxygen is 64/183.3. In 10 g of zircon, the mass of oxygen is (64/183.3) * 10 g ≈ 3.5 g.

Zircon Is a Mineral with the Empirical Formula ZrSiO4

Zircon Is a Mineral with the Empirical Formula ZrSiO₄