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serious [3.7K]
4 years ago
11

Which formula correctly represents the composition of iron (III) oxide?

Chemistry
2 answers:
lisov135 [29]4 years ago
8 0
Iron (III) oxide has a chemical formula of (2) Fe2O3.

Hope this helps~
shutvik [7]4 years ago
4 0
2) Fe2O3 because Oxygen has has a negative 2 charge and Iron has a -3 charge so u need 2 iron and 3 oxygen
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Which identifies an oxidation-reduction reaction?
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Answer:

Explanation:

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Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Consider the following reactions.

4KI + 2CuCl₂  →   2CuI  + I₂  + 4KCl

the oxidation state of copper is changed from +2 to +1 so copper get reduced.

CO + H₂O   →  CO₂ + H₂

the oxidation state of carbon is +2 on reactant  side and on product side it becomes  +4 so carbon get oxidized.

Na₂CO₃ + H₃PO₄  →  Na₂HPO₄ + CO₂ + H₂O

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H₂S + 2NaOH → Na₂S + 2H₂O

The oxidation sate of sulfur is -2 on reactant side and in product side it is also -2 so it neither oxidized nor reduced.

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8 0
3 years ago
A student writes the following explanation of how certain molecules are formed.A process is used to chemically link smaller unit
tensa zangetsu [6.8K]

Answer:

polymerization

Explanation:

Student is explaining the process of formation of a polymer and the process is called polymerization.

Polymer is made up of joining repeating units. The repeating units are called monomers.  

Properties of the polymer is determined by the structure of monomer molecule.

For example, consider a well-known polymer Teflon.is made by the polymerization of tetrafluoroethane.  

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8 0
4 years ago
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Answer:

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4 0
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s344n2d4d5 [400]

Answer:

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