Copper Can Be Separated from Iron in the Ore Chalcopyrite $\rarr$

question 39

Multiple Choice

Copper can be separated from iron in the ore chalcopyrite (CuFeS₂) by heating the ore in the presence of oxygen to form copper(I) sulfide, iron(II) oxide, and one other product. Complete the following partially balanced equation by deciding both the identity of the missing compound and the number of moles required to balance the equation. (Note, no other coefficients are allowed to be changed.)
2CuFeS₂(s) + 4O₂(g) $\rarr$ Cu₂S(s) + 2FeO(s) + _____

• A)2SO₃(g)
• B)3SO₃(g)
• C)2SO₂(g)
• D)3SO₂(g)
• E)None of the above

---

Definitions:

Budget

An internal financial plan that forecasts expenses and income over a set period of time.

Strategic Financial Plan

A comprehensive evaluation and planning document that outlines an organization's financial goals and the strategies to achieve them.

Forecast

A prediction or estimate of future events or trends, often based on analysis of past and current data.