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What is the half life of uranium 238 if 85.719 percent of any given amount remains after 1 billion years?
Wiki User
∙ 12y ago
Natural uranium contain 0,7204 % uranium 235.
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoThe halflife of 235U is 704 million years. 1420 million years is approximately two halflives, so about 24.7% would be remaining.
Wiki User
∙ 16y agoNot very much
Wiki User
∙ 12y agoThe half-life of 238U is 4,468x109 years.
kok Ri
24.7%
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If the age of the Earth is 4.5 billion years and the half-life of 40K is 1.26 billion years what percent of the Earth's original amount of 40K remains today?
8.4
Can scientists now find the absolute age of a rock?
By measuring the amount of Uranium contained within the specific rock/fossil. Uranium-238's Half-Life is about 4.47 billion years, So each 4.47 billion years, the amount of Uranium is reduced by half. If the accepted amount of Uranium for a time period is 25%, and the sample contains 12.5%, then it is twice as old as that time period. Scientists cannot use carbon dating on rocks because they were never living things, and did not inhale carbon-14 from the atmosphere.
How do scientist determine the relative age age of a rock or fossil?
Through geological dating and stratigraphy. Also, they use Uranium Dating. By measuring the amount of Uranium contained within the specific rock/fossil. Uranium-238's Half-Life is about 4.47 billion years, So each 4.47 billion years, the amount of Uranium is reduced by half. If the accepted amount of Uranium for a time period is 25%, and the sample contains 12.5%, then it is twice as old as that time period. Scientists cannot use carbon dating on rocks because they were never living things, and did not inhale carbon-14 from the atmosphere.
Are there any kinds of uranium?
In nature, uranium is found as uranium-238 (99.284%), uranium-235 (0.711%),[4] and a very small amount of uranium-234 (0.0058%)
Has the amount of uranium in Earth increased over geologic time Has the amount of lead in Earth increased?
The amount of uranium decreasesd, the amount of lead increased over geologic times.
If the age of the Earth is 4.5 billion years and the half-life of 40K is 1.26 billion years what percent of the Earth's original amount of 40K remains today?
8.4
What determines the absolute age of rocks?
Radioactive dating. By measuring the amount of Uranium contained within the specific rock/fossil. Uranium-238's Half-Life is about 4.47 billion years, So each 4.47 billion years, the amount of Uranium is reduced by half. If the accepted amount of Uranium for a time period is 25%, and the sample contains 12.5%, then it is twice as old as that time period. Scientists cannot use carbon dating on rocks because they were never living things, and did not inhale carbon-14 from the atmosphere.
Can scientists now find the absolute age of a rock?
By measuring the amount of Uranium contained within the specific rock/fossil. Uranium-238's Half-Life is about 4.47 billion years, So each 4.47 billion years, the amount of Uranium is reduced by half. If the accepted amount of Uranium for a time period is 25%, and the sample contains 12.5%, then it is twice as old as that time period. Scientists cannot use carbon dating on rocks because they were never living things, and did not inhale carbon-14 from the atmosphere.
How do scientist determine the relative age age of a rock or fossil?
Through geological dating and stratigraphy. Also, they use Uranium Dating. By measuring the amount of Uranium contained within the specific rock/fossil. Uranium-238's Half-Life is about 4.47 billion years, So each 4.47 billion years, the amount of Uranium is reduced by half. If the accepted amount of Uranium for a time period is 25%, and the sample contains 12.5%, then it is twice as old as that time period. Scientists cannot use carbon dating on rocks because they were never living things, and did not inhale carbon-14 from the atmosphere.
If the GDP in Africa increased 3.6 percent in one year from 5.6 billion to 5.8 billion does that mean that Africa had a 3.6 percent increase in the amount of goods and services produced?
Yes, but the increase from 5.6 billion to 5.8 billion is actually 3.5714% which rounds to 3.6%
Are there any kinds of uranium?
In nature, uranium is found as uranium-238 (99.284%), uranium-235 (0.711%),[4] and a very small amount of uranium-234 (0.0058%)
Has the amount of uranium in Earth increased over geologic time Has the amount of lead in Earth increased?
The amount of uranium decreasesd, the amount of lead increased over geologic times.
What is the amount of Protons in Uranium?
92
What is the amount uranium is used in nuclear fission?
Minimum one atom of uranium 235.
What are the positive enriched uranium?
- the energy released from enriched uranium is higher compared to natural uranium- the amount of uranium needed for a reactor is lower- research reactors work only with enriched uranium- atomic bombs have highly enriched uranium or plutonium
How much energy can uranium produce?
It depends upon the amount of uranium being used.However, the energy given out per nucleon per fission of uranium is 0.9 MeV.
What the amount in Billion of 567933610?
It is 0.567 933 610 billion.
