The half-life is 700 million years !
Reed Keeling
Wiki User
∙ 15y ago700 million years
Wiki User
∙ 9y agoUranium 235 has a half life of about 7000 million years if 1 kg of U235 is put on a shelf in a laboratory and left for 700 million years 900 g would remain. The bigger question would be how the shelf and laboratory survived that long.
Wiki User
∙ 9y agoIf a rock sample is determined to have one-quarter of the uranium-235 content it had when it formed the age of the rock sample is 1.426 billion years.
Wiki User
∙ 14y ago700 million (more exactly 703,8.106) years
Wiki User
∙ 14y agoUranium 235 halflife: 7,038.108 years
Uranium 238 halflife: 4,468.109 years
Wiki User
∙ 14y agoThe full decay chain of 235U takes about 70,413,000 years. It can be seen at the related link below. (It actually starts with 239Pu as a precursor to 235U.)
Wiki User
∙ 7y agoUranium 235 has a half-life of 700 million years.
Wiki User
∙ 14y ago2.1 billion years old
Wiki User
∙ 7y ago704 million years.
700 milliion years. The definition of half-life is the period of time during which one-half of the atoms of an element undergo decay into other elements.
c.half-life
The half-life of promethium-145 is approximately 17.7 years. Promethium-147 has a half-life of about 2.62 years.
The length of time for the second half-life is the same as the first half-life. Each half-life represents the time it takes for half of the radioactive atoms in a sample to decay. This process continues exponentially with each subsequent half-life.
Half-life is described in time units.
700 milliion years. The definition of half-life is the period of time during which one-half of the atoms of an element undergo decay into other elements.
can cause lung cancer
The reaction produces more neutrons than were needed to start it.
Nuclear energy as used in power plants results from fission of uranium235 and plutonium239
No. Half Life: Opposing Force does not require neither Half Life nor Half Life: Blue Shift.
Most likely Half Life Source
No, only Half-Life and Half-Life: Decay.
The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.
Antibiotics do not have a half life.
You say 'I've missed Half my life' which is short for : "I have missed half my life'
The term is called half-life. It is the time it takes for half of the radioactive nuclei in a sample to decay.
Buy Half Life: Source Or Buy Garrysmod a Half-Life 2 Modification and get the addon "Half-Life Rennaisance" Link to Half Life Rennaisance: http://www.garrysmod.org/downloads/?a=view&id=57033 Enjoy!