What Is Responsible for the Brownish Colored Gas When Copper

question 275

Multiple Choice

What is responsible for the brownish colored gas when copper dissolves in nitric acid?

• A)2 NO(g)+ O₂(g)→ 2 NO₂(g)
• B)2 N₂(g)+ O₂(g)→ 2 NO(g)
• C)NH₄NO₃(l)→ N₂O(g)+ 2 H₂O(g)
• D)2 NO₂(g)→ N₂O₄(g)

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Definitions:

Desmosome

A specialized cell structure that functions in cell-to-cell adhesion in animal tissues, providing mechanical strength.

Gap Junction

Structure consisting of specialized regions of the plasma membrane of two adjacent cells; contains numerous pores that allow the passage of certain small molecules and ions between them.

Anchorage Points

Specific locations or structures where forces can be applied for stability, support, or resistance, often used in construction and cellular contexts.

Intercellular Spaces

Gaps or areas between the cells of plants or animals, allowing for the exchange of gases or the passage of nutrients.