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Define corrosion? What is the chemical f...

Define corrosion? What is the chemical formula of rust?

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Corrosion is the slow destruction of the metal due to attack of the atmospheric gases on the surface of the metal resulting tinto the formation of oxides. sulphides, carbonatés. sulphates etc, of the metal Rust is. `Fe_2 O_y^* xx H_2 O`
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