Never mind I figured it out. A supply of copper pipes is stored outdoors. Over the course of many years, the copper reacts with oxygen and turns green. What clue indicates a chemical reaction took place?

asked Feb 16, 2021 60.1k views

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4 votes

ok I’m happy you got the answer also thx for the points

Stephen Croft answered Feb 17, 2021

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1 vote

Answer:

ok glad you got then answer right

Nfarshchi answered Feb 23, 2021

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