Which substance combines with iron in the presence of water to form rust?

Responses

nitrogen
nitrogen

carbon dioxide
carbon dioxide

acid
acid

oxygen

🤖 said it ia d

The substance that combines with iron in the presence of water to form rust is oxygen. Rust, scientifically known as iron oxide, forms when iron reacts with oxygen in the presence of moisture or water. This process is called oxidation.

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The substance that combines with iron in the presence of water to form rust is oxygen.