![]() ![]() Electrochemical reactions are used by most mobile devices such as laptop computers and mobile phones to release energy from batteries. Liquid hydrocarbons (fuels such as gasoline, diesel and kerosene) are today the densest way known to economically store and transport chemical energy at a large scale (1 kg of diesel fuel burns with the oxygen contained in ≈15 kg of air). Chemical reactions are used by animals to derive energy from food and by automobiles to derive energy from gasoline. Nuclear reactions take place in stars and nuclear power plants, both of which derive energy from the binding energy of nuclei. In order of the typical magnitude of the energy released, these types of reactions are: nuclear, chemical, electrochemical, and electrical. There are different types of energy stored in materials, and it takes a particular type of reaction to release each type of energy.
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