Uranium was discovered in 1789; up to 2011 - 222 years.
if a 2.25 billion year old rock had a mass of 200g of 238 uranium determine the mass of 238 uranium that would remain today?
Only Iran has today an uranium mine.
Utah has many uranium mines but today they are closed.
Our Earth and most of the Solar System is about 4.5x109 years old. This is established by radiometric dating, commonly by the uranium - lead series.
Today uranium mines are practically abandoned in New Mexico.
Uranium was discovered (as an oxide) in 1789 by Martin Heinrich Klaproth. All elements with atomic numbers greater than iron are created in supernova explosions. These have been happening since shortly after the 'big bang' and still happen today. Throughout the universe some uranium is very old and some has just been created. The uranium on earth cannot be older than about 4.5 billion years.
It is difficult to loss uranium today; but if it is lost or stolen should be of course sought !
Little boy and fat man will blow u away
Working without care uranium may be a pollutant for soils and waters.These disadvantages can be avoided today.
Today this country is Kazachstan.
Enrichment of uranium in the isotope 235U by: - centrifugal separation - gaseous diffusion separation - many other methods - not so important today
Any change the same applications as today.