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Question
______ and ______ are necessary for the rusting of iron.
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Solution
Air and water are necessary for the rusting of iron.
Explanation:
Rusting is an electrochemical process that requires iron to interact simultaneously with both oxygen and water. If only one of these components is present, the chemical reaction cannot occur. When both are available, they react with iron to form hydrated iron(III) oxide, commonly known as rust.
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