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Uranium
Uranium is a heavy element with the atomic number 92 and the symbol U. In 1789 it was discovered in the mineral pitchblende by Martin Heinrich Klaproth , who named it after the planet Uranus
586 Questions
Why is a chain reaction more likely in a big pieces of uranium than its in a small piece?
A small piece has more surface area compared to its mass; as a result, more neutrons will escape before they can participate in the chain reaction.
How is uranium found or produced?
Uranium was discovered (as an oxide) in 1789 in Germany by Martin Heinrich Klaproth; but the mineral pitchblende was from Jachimow, now in Czech Republic and from Johanngeorgenstadt, now in Germany. The laboratory of Klaproth was in Berlin.
In 1841 Eugene Melchior Peligot obtained uranium as a pure metal.
What mining company mined Uranium on Navajo land?
The Kerr-McGee Company was the first, starting in 1948.
At various times until mining stopped Atlantic Richfield, Continental Oil, Exxon, Humble Oil, Homestake, Kerr-McGee, Mobil Oil, Pioneer Nuclear, and United Nuclear applied for and worked to various degrees other leases also on Navajo lands.
What puzzled Marie Curie about uranium?
- They discovered that radiations are emitted from the uranium atom (and not from the molecule containing uranium) and are dependent on the quantity of uranium.
- They discovered polonium and radium in uranium minerals.
Could uranium be used in schools?
It depends on the subject.
- english class, no
- history class, unlikely
- math class, no
- chemistry class, maybe
- physics class, very likely yes (as part of studying radioactivity)
- biology class, unlikely
- physical education/sports, no
- driver's education, no
- social studies class, no
- etc.
How many centrifuges to enrich uranium are in the us?
Classified information that is not disclosed to the public.
Is the isotope of uranium you found in a stable r radioactive?
All the isotopes of uranium are unstable.
Natural isotopes of uranium are: 234, 235 and 238.
What city in New Mexico had a lot of uranium mines?
Grants was the center of one of the largest uranium mining districts in New Mexico.
How do you store small uranium mineral?
If you have a collection of minerals you can store a radioactive mineral in a glass bottle.
The alpha and beta radiations are retained by glass; the gamma rays from uranium having a low energy are also largely blocked .
Which planet have lot uranium?
The percentage of uranium on all the planets in our solar system is almost certainly identical as it all came from the same source in supernovas that predated the formation of the nebula that became the solar system.
What is the discovery date of uranium?
Uranium was discovered in 1789 by Martin Heinrich Klaproth who named it after Uranus
Was uranium discovered in Germany?
Martin Heinrich Klaproth, a German apothecary, considered in 1789 that a mineral from Joachmow is a new metal. In fact it was only an oxide.
In 1842 Eugene Melchior Peligot, French chemist, separated uranium as a pure metal.
Uranium is primarily produced in stars through the process of nucleosynthesis, where lighter elements are fused together under the extreme temperatures and pressures within a star's core. This process involves a series of nuclear reactions that eventually lead to the creation of heavier elements like uranium. When the star reaches the end of its life cycle and explodes in a supernova, these newly formed elements are dispersed into space, where they can later be incorporated into planet-forming processes.
What is the reason for naming uranium uranium?
The name of the chemical element is derived from the name of the planet Uranus; also Uranus was the old Greek god of the sky.
When a uranium atom decays radioactivity to become protactinium the radiation emitted is?
Some possible decays:
- U-231------------Pa-231 (by electron capture)
- U-229------------Pa-229 (emission of a beta particle)
- U-228------------Pa-228 (by electron capture)
Ammunitions, armors, shielding materials: depleted uranium metal (approx. 0,2 % 235U) alloyed with ca. 2 % other elements. Nuclear fuel for research reacyors: U-Zr-Er-H Potential alloys in the future: U-Ti, U-Nb, U-Zr, U-Zr-Nb, U-Mo
What are the 3 uranium eating bacteria?
Bacteria doesn't eat uranium. But:
- cytrobacter can absorb uranium
- S. putrefaciens reduce U(VI) to U(IV)
- S. metallireducens has the same effect
- Geobacteria absorb also uranium
etc.
Why is uranium expensive in Africa?
Uranium is expensive in all countries.
The price of uranium is approx. 90US $ per kg of oxide U3O8.
