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AnswerIf you mean in the sun, then the answer is:

A nuclear cycle, now known as the carbon-nitrogen-oxygen (CNO) cycle, in which hydrogen nuclei could be burned using carbon as a catalyst.

If you mean in hydrogen bombs, then the answer is:

Energy released in the primary stage is transferred to the secondary (or fusion) stage. The exact mechanism whereby this happens is unknown. This energy compresses the fusion fuel and sparkplug; the compressed sparkplug becomes critical and undergoes a fission chain reaction, further heating the compressed fusion fuel to a high enough temperature to induce fusion, and also supplying neutrons that react with lithium to create tritium for fusion. Generally, increasing the kinetic energy of gas molecules contained in a limited volume will increase both temperature and pressure.

AnswerHydrogen fusion releases so much energy because there is so much energy available. When two hydrogen nuclei fuse to form one helium nucleus, the total energy in the helium nucleus (E=MC2) is less than the total energy in two hydrogen nuclei. The difference is the amount of energy released in the fusion reaction.
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Related Questions

What are the products of nuclear fusion in a hydrogen bomb?

The nuclear fusion uses Hydrogen to produce Helium. The fusion also releases a lot of energy, which is what causes the explosion.


What type of energy is the sun's energy source?

hydrogen fusion


How does nuclear fusion work when stars produce their own energy?

The fusion of Hydrogen into Helium causes heat and radiation to occur.


Hydrogen bombs and stars both produce energy with nuclear?

fusion reactions, where lighter elements combine to release tremendous amounts of energy. In stars, the fusion of hydrogen into helium powers their luminosity and heat. Hydrogen bombs use isotopes of hydrogen to trigger a controlled fusion reaction, releasing a massive amount of explosive energy.


What process release the energy in the sun?

The energy in the sun is released through nuclear fusion. This process involves the fusion of hydrogen atoms to form helium, releasing large amounts of energy in the form of heat and light.


How does the nuclear fusion generate energy?

The Sun energy is from hydrogen fusion.


What energy has sun fusing helium atoms in hydrogen and release energy?

Nuclear fusion is a process where multiple like-charged atomic nuclei join together to form heavier nucleus. It is accompanied by the release of energy. The nuclear fusion process is responsible for the fusion of helium of hydrogen atoms into helium atoms in the core of the sun.


Is hydrogen a fission or fusion?

Hydrogen undergoes fusion, not fission. Fusion is the process of combining lighter elements, like hydrogen, to form heavier elements and release energy. Fission, on the other hand, is the process of splitting heavier elements into lighter ones.


Is the energy produced by the sun atomic fusion or fission?

It is fusion - the fusion of hydrogen into helium - accompanied by a gigantic release of binding energy that feeds the reaction and generates radiation in the form of light, heat, etc.


Why a hydrogen bomb is called a hydrogen bomb?

A hydrogen bomb is called so because it mainly relies on the fusion of hydrogen isotopes to release energy. The fusion process is what distinguishes it from an atomic bomb, which relies on nuclear fission.


What energy has sun fusing hydrogen atoms in helium and release energy?

The sun's energy (and that of all other stars) comes from nuclear fusion. The nuclei of hydrogen atoms (ie protons) fuse together to produce helium and release energy.


How do star use energy?

Stars fuse hydrogen through nuclear fusion into helium and release the massive resulting energy into space.