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How do nuclear changes demonstrate the Law of Conservation of Mass and Energy concerning fission and fusion?
Fission and fusion involve the conversion of mass into energy, the total of which is conserved according to E = mc^2. However, at the quantum scale, which is where nuclear reactions take place, it's more accurate to view mass & energy as not two distinct concepts, but one, that of mass-energy. The "mass" of a nucleus is often slightly more than the total mass of it's constituent nucleons, with the excess being in the form of potential mass-energy from the residual strong force locking the nucleons together. In a reaction like fission or fusion, excess mass-energy locked inside the nucleus is released as radiant and kinetic energy.
What are the three main advantages of a fusion reactor compared to a fission reactor?
Fusion reactors produce less radioactive waste compared to fission reactors. Fusion reactors use abundant sources such as deuterium and lithium for fuel, while fission reactors use limited sources like uranium. Fusion reactions release more energy per unit mass of fuel compared to fission reactions.
How is fission used to calculate the energy required?
In nuclear fission, the energy released is calculated using the mass defect principle expressed by Einstein's equation E=mc^2, where E is energy, m is mass defect, and c is the speed of light. The mass defect is the difference in mass between the reactants and products of the fission reaction, and this mass defect is converted to energy according to Einstein's equation.
How much more energy does fission have than fusion?
This is one of those things where the answer depends on what you mean. The fusion of a deuterium atom and a tritium atom into a helium atom produces about 14.1 million electron volts (MeV). By comparison, the fission of a uranium atom produces about 202 MeV, making a fission event over 14 times as powerful as a fusion event. But we could looked at it another way. A uranium-238 atom as an atomic mass of about 238, and the 202 MeV come from that mass, providing a yield of about 0.82 MeV per unit mass. By contrast, the 14.1 MeV from one deuterium, with an atomic mass of about 2, and one tritium, with an atomic mass of about 3, so the yield is about 2.8 MeV per unit mass, which makes fusion over 3 times as powerful as fission per mass per event.
How is the principle of conservation of energy seen in fission and fusion reactions?
In fission reactions, the energy released is a result of the splitting of a heavy nucleus into smaller fragments, where the sum of the masses of the fragments is less than the original nucleus. This decrease in mass is converted into energy according to Einstein's equation (E=mc^2). In fusion reactions, energy is released when lighter nuclei combine to form a heavier nucleus, with the energy coming from the mass difference between the reactants and products.
The mass of an atom aftre it under goes fission or fusion?
The mass of an atom after undergoing fission or fusion will be less than the original mass because some of the mass is converted into energy according to Einstein's mass-energy equivalence (E=mc^2). In fission, the total mass of the products is less than the original atom due to the release of energy. In fusion, the combined mass of the reactants will be slightly more than the mass of the resulting atom due to the energy input required.
How are fission and fission similar?
Fusion and fission are similar in that they both reduce mass and thereby release binding energy.
Why is the mass of reactants less than the product in nuclear fission?
A part of mass is transformed in energy.
Why are fission products of same mass as the reactants rarely formed?
During fission, the energy released comes from converting mass into energy (calculated by Einstein's famous equation: E = mc2). Therefore, if a fission reaction releases energy, and it does, that energy came from converting mass into energy, thus reducing the mass of the reactants.
How do the masses of the atoms produced as a result of fusion reaction differ from the masses of the atoms that result from a nuclear fission reaction?
Fusion: smaller atoms are made into bigger atoms (2 Deuterium atoms -> 1 Helium atom) Fission: larger atoms are made into smaller atoms (1 Uranium 235 (Z=92) + 1 neutron -> 1 Krypton 92 (Z=36) + 1 Barium 141 (Z=56))
Which is more strong in producing energy the fusion or the fission?
Fusion produces energy more than fission by around 400 times for same mass.
How does nuclear fission and nuclear fusion get power?
The mass defect due to fission or fusion converts to energy according to the equation: E = m c 2
In a nuclear fusion reaction how does the mass of the products compare to the mass of the reactants.?
In a nuclear fusion reaction, the mass of the products is slightly less than the mass of the reactants. This loss of mass is converted into energy according to Einstein's E=mc^2 equation. The difference in mass is known as the mass defect.
What is true about the balance of mass in a fusion reaction?
In a fusion reaction, the total mass of the reaction products is less than the total mass of the initial reactants due to the conversion of mass into energy according to Einstein's famous equation E=mc^2. This difference in mass is known as the mass defect, and the lost mass is converted into energy during the fusion reaction.
For each gram of reactant fusion produces what energy than fission?
Fusion produces energy more than fission by around 400 times for same mass.
For each gram of reactan fusion produses what energy than fission?
Fusion produces energy more than fission by around 400 times for same mass.
How are fissions and fusion similar?
Fusion and fission are similar in that they both reduce mass and thereby release binding energy.
