Question

When a copper is exposed to air for a long time it acquires a green coat. Because
it reacts with
A. sulphur
B. nitrogen
C. moist oxygen
D. moist carbondioxide​

Answer 1

Explanation:

the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal

Answer 2

c) moist oxygen

Here is yor answer and brainly is saying we need at least 20 words Lmao