Extracting Copper from Sulfide Ores Can Be Performed by Roasting $\to$

question 72

Multiple Choice

Extracting copper from sulfide ores can be performed by roasting the ore in oxygen,with a subsequent reaction of copper (I) oxide with carbon.Simplified chemical equations for these steps are shown below.Mathematically combine the two reactions to create an overall balanced equation.Eliminate like terms from your final equation and use the lowest whole-number coefficients possible.Select the statement regarding the overall balanced reaction that is NOT true. 2 Cu₂S(s) + 3 O₂(g) $\to$ 2 Cu₂O(s) + 2 SO₂(g)
Cu₂O(s) + C(s) $\to$ 2 Cu(s) + CO(g)

• A)The balanced reaction requires three moles of oxygen gas.
• B)Two moles of copper result when two moles of carbon react.
• C)Cu₂O does not appear in the final balanced equation.
• D)Two moles of CO gas are produced in the overall balanced equation.
• E)There are three reactants and three products in the overall balanced equation.

Analyze the role of political ideology and policies in shaping the U.S. Supreme Court's decisions and their impact on American democracy.

Understand the socioeconomic changes in the American labor force during the early to mid-19th century.

Analyze the evolution of voting rights and political participation for white males in the United States.

Evaluate the reasons behind Andrew Jackson’s opposition to the re-charter of the Second Bank of the United States.

---

Definitions:

Neuronal Membrane

The lipid bilayer that encloses the cytoplasm of a neuron, crucial for maintaining the ion gradient and enabling the propagation of nerve impulses.

Ions

Charged particles that have either lost or gained electrons, playing critical roles in various biological processes, including nerve impulse transmission and muscle contraction.

Neutral Molecules

Neutral molecules are chemical species without any net electrical charge.

Electrical Activity

The movement of electrically charged particles, such as electrons or ions, which is a fundamental process in biological systems and electronic devices.