The vast majority of mass of uranium ore is U-238 and much of that is discarded as Depleted Uranium. U-235, assuming complete fission, would release about 80 billion joules per gram. Usually Enriched Uranium for reactors (reactor grade) is around 3-4% U-235, as opposed to Weapons Grade, which is much higher.
The answer depends both on what you mean by a gram of uranium and the process for deriving the energy. If we're talking only about normal uranium ore, about 200 million joules per gram, a few thousand times that produced by burning gas, coal, etc. I'm basing that off the amount of uranium ore consumed for a 1000 megawatt Light Water Reactor, and is a very rough calculation, but you're going to get a wide range of values depending on the process and the individual make up of isotopes in the fuel rods. Your losing a lot of energy to waste heat, your not using most of the fuel all the way up, and so on. But a 1000 MW LWR consumes around 170 tons of uranium ore a year, so from a practical standpoint, if you're asking how much usable energy we get out of a gram of uranium, this is better value than the 80 billion joule value.
Uranium-235 is a naturally occurring isotope of uranium, but it can also be created through a process called uranium enrichment. This involves increasing the concentration of uranium-235 in a sample of uranium by separating it from the more abundant uranium-238 isotope. One common method of enrichment is through gas centrifugation, where uranium hexafluoride gas is spun at high speeds to separate the isotopes based on their slightly different weights. Another method is through gas diffusion, where the gas is passed through a porous membrane that allows the lighter uranium-235 to pass through more easily. These processes require advanced technology and expertise to carry out safely and efficiently.
One of the particles released during the fission of uranium-235 is a neutron. When uranium-235 undergoes fission, it splits into two smaller atoms along with several neutrons. These neutrons can then go on to initiate additional fission reactions in a chain reaction.
(4,470 ± 0,020).109 years by alpha decay and (8,20 ± 0,10).1015 years by spontaneous fission.
There are many types of uranium pellets depending on the nuclear reactor type and the used uranium enrichment (or uranium-235 content). It may be more illustrative to say that: 1 gram of uranium-235 when undergoes fission in a nuclear reactor gives energy roughly equivalent to burning 3 tonnes of coal or 2 tonnes of oil.
If a radioactive isotope has a half-life of 4 years, than 0.125 (0.53) of the isotope will remain after 12 years, or 3 half-lives.The question asked about Uranium. There is no isotope of Uranium with a half-life of 4 years. The closest is 232U92, which has a half-life of 68.9 years.Reference: http://www.nndc.bnl.gov/chart/
Uranium 235 has several isotopes but, 235 would contain 235 electrons in one atom.
No, Uranium-235 and uranium-238 are radioactive, natural isotopes (not molecules, but atoms) of the one and the same element: uranium.Both with 92 protons and 235-92 = 143 neutrons in U-235 but 146 neutrons in U-238.
Minimum one atom of uranium 235.
Uranium 235 is 0.7 percent of natural uranium and is fissile
Oak Ridge was built to separate Uranium 235 from Uranium 238. Uranium 235 is the fissile isotope of natural Uranium, suitable for use in bombs or power generation. 99+% of Uranium is U 238 and U 235 is less than one per cent.
Uranium-235
Uranium-235 is more explosive than uranium-238. This is because uranium-235 is fissile, meaning it can sustain a chain reaction of nuclear fission, which releases a large amount of energy. Uranium-238 is not fissile and requires a neutron source to undergo fission.
Uranium-235 is a naturally occurring isotope of uranium, but it can also be created through a process called uranium enrichment. This involves increasing the concentration of uranium-235 in a sample of uranium by separating it from the more abundant uranium-238 isotope. One common method of enrichment is through gas centrifugation, where uranium hexafluoride gas is spun at high speeds to separate the isotopes based on their slightly different weights. Another method is through gas diffusion, where the gas is passed through a porous membrane that allows the lighter uranium-235 to pass through more easily. These processes require advanced technology and expertise to carry out safely and efficiently.
Depleted uranium is uranium with a content of the isotope uranium-235 under 0.7 %. Natural uranium has been processed to change (increase) the concentrations of lighter isotopes, and the "leftovers" are termed depleted uranium. Let's look at this heavy metal and sort things out. Without splitting hairs, the element uranium as it comes out of the ground is almost 99.27% U-238, and about 0.73% U-235. There's also a trace of U-234 in it. The isotope U-235 is the desired one for use in nuclear fuels and in nuclear weapons. Uranium is processed or "enriched" to increase the amount of the lighter isotope in the the finished product. This leaves the rest of the uranium "depleted" of some (or much) of its U-235 (and U-234, for what it's worth). The term depleted uranium is then applied to the remaining uranium. A link can be found below to check facts and gather more information.
Examples for the natural fissile uranium isotope: 1. Recommended notation: 23592U; 235 is the mass, 92 is the atomic number. 2. Alternative notation: U-235 or uranium-235.
Uranium 235 is unstable because it is a radioactive isotope. This means that it is constantly decaying and emitting radiation. The reason it is unstable is because it has too many neutrons in its nucleus. The neutron is a unstable particle, and when there are too many of them in one place, they can cause problems. When uranium 235 decays, it emits alpha particles, which are high-energy particles that can damage DNA and cause cancer.
1 pound of uranium 235 is approx. similar to 106 pounds of petrol.