The answer is the third choice because is oxidation half reactions, only the oxidation state of the reducing agent changes; in this third choice, Fe2+ is oxidized and becomes Fe3+. Just keep in mind that half reactions usually include the change in electrons:
Fe2+ -> Fe3+ +e-<span />
The human activity creating water pollution and depletion are uses of fertilizers, detergents and chloro flouro carbon many other things.
<h3>What is water pollution?</h3>
Water pollution is defined as the contamination of water bodies, usually as a result of human activity, in such a way that their lawful uses are harmed.
The activities of human that creating water pollution are:
- Uses of fertilizers
- Harmful chemical in agriculture
- Detergents for washing clothes
- Wastes from industries
And depletion in the ozone layer are due to halogen source gases, which contain chlorine and bromine atoms, are produced by human activities. These emissions into the atmosphere eventually contribute to ozone depletion in the stratosphere.
Hence human activities are uses of fertilizers, detergents and many other things.
To know more about water pollution, visit the below link:
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Answer:
A saturated solution can become supersaturated when it is cooled. The solubility of solid solutes in liquid solvents increases as the solvent is warmed up. For example, you can dissolve more sugar in warm water as opposed to cold water
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Explanation:
Red cabbage contains a water-soluble pigment called anthocyanin that changes color when it is mixed with an acid or a base. The pigment turns red in acidic environments with a pH less than 7 and the pigment turns bluish-green in alkaline (basic), environments with a pH greater than 7.
<u>Answer:</u> The products in the given chemical reaction are 
<u>Explanation:</u>
Reactants are defined as the species which react in the reaction and are written on the left side of the reaction arrow.
Products are defined as the species which are produced in the reaction and are written on the right side of the reaction arrow.
For the given chemical equation:
The reactants of the above reaction are 
and the products are
Hence, the products in the given chemical reaction are
