Science, asked by jagadeeshshreyu1968, 11 months ago

A student has been collecting silver coins and copper coins.one day he observed a black coating on silver coins and green coating on copper coins. give the chemical name of black and green coating. How are they formed

Answers

Answered by sadriwala00123

1

Answer:

Black coating = Ag2S

Green coating = CuCO3

Explanation:

due to corrosion

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