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Oxygen air.

2Fe + O2 -> 2FeO

or

4Fe + 3O2 -> Fe2O3

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Q: What does iron combine with to create rust?
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Related questions

Does water make iron rusty?

Yes. Water, or any other form of moisture, will combine with iron to create iron oxide, otherwise known as rust.


When iron and oxygen combine to form rust what is are the reactants?

What happens when iron and oxygen react?


What are the elements combine to form rust?

Fe2O3 is the answer you look for. In other words Iron + Oxygen = Rust


When a nail rust iron from the nail combines with oxygen from the air to form what?

They combine to form rust. You might be able to guess from what's combining that "rust" is apparently an iron oxide.


What makes rust?

Iron combines with oxygen in the air to form ferric oxide, also known as rust.


When rust is a compound with the formula which elements combine to form rust?

when certain elements (such as steel) are exposed to oxygen, they react, and rust is formed. However this reaction is very slow


What elements are needed to create rust?

All you need is water and iron the oxygen itself is not enough to create rust so you will need to use the water.


Iron and oxygen combine to form iron oxide List the reactants and products of this reaction?

Reactants: -iron -oxygen Products: -rust


What compound is created when iron and oxygen mix?

Iron and oxygen combine chemically to form iron oxide, also known as rust.


What two substances that cause metals to rust faster?

Iron in the presence of oxygen and water, or air moisture, will combine to form Iron Oxide or it more common name rust. But Iron can also combine with chlorine in an oxygen free environment such as re-bars (reinforced concrete post) to form a green rust called Fougerite.


What are the reactants and products when iron and oxygen combine to form iron oxide?

reactants: iron and oxygen products: rust (aka: iron (II) oxide or FeO)


How does cast iron respond to rust?

Rust is the oxidation of the cast iron. Oxygen in the air combines with the base metal to create the rust. The rust protects the metal underneath. Cast iron is not "reacting" to rust. It is participating in FORMING the rust. ************** previous answer below *************** Very well as the rust actually protects the base metal