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How much of the radioactive element will be left one billion years from now?
Wiki User
∙ 14y ago
That depends on the "half-life" of that particular radioactive element, which the question
forgot to state. They're all different. Various radioactive elements have half-lives ranging
from microseconds to millions of years.
Wiki User
∙ 14y ago
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How old is a fossil that has a radioactive material with a half life of 200 years if there is 25 percent of the original radioactive material left?
400 yrs
A particular element has a half life of 27 daysafter 54 days how much of the radioactive material is left?
The half life is the time it takes for half the atoms in a given sample to decompose. Knowing this then after 27 days there is half the amount left. After 54 days then there is half that half left so that's a quarter.
If a radioactive element half life is 500000 years given 20 grams of the element how much is left after 4 half lives?
Just divide the original amount by 2, 4 times: 10; 5; 2.5; 1.25. The final number is the answer.
How much of an element is left after 2 half lives?
Depends on how many grams you started with, but obviously if half decays, half is left.
How did scientists use radioactive decay to determine the absolute age of the rock?
Scientists use the half life of carbon-14 as a parameter to measure the age of an object. Based on the amount of molecular decay, because it happens at a constant rate, scientists are able to assume the age of said object.
If a radioactive isotope had a half - life of 1 billion years how much of it would be left after 2 billion years?
1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years.
What is the most chemically active nonmetal?
Lead is the heaviest non-radioactive element. It was previously thought to be Bismuth, but in 2003, it was found to be weakly radioactive with a half-life of about 19 quintillion years (19 billion billion years). Because of it's ridiculously long half-life, Bismuth can be treated as if it is stable, but it will eventually decay into Thallium.
A 2.5 gram sample of a radioactive element was formed in a 1960 explosion of an atomic bomb at Johnson Island in the Pacific Test Site The half-life of the radioactive element is 28 years How much?
How much is left? 2.5 x ((0.5)((2009-1960)/28)) (A bit more than 25%)
How many more years worth of hydrogen does the sun have left?
Approximately 5 billion years left
What is it called when uranium turns to lead?
Uranium is radioactive. Which means its nucleus will emitt an alpha particle (two protons and two neutrons) spontaneously. Because the nucleus lost two protons it becomes the element Thorium. Thorium also emitts alpha's and changes to Radium. This process continues; Radium into Radon into Polonium and finally into lead. The final Lead is not radioactive and the process ends. The actual process is a little more complicated because some of these intermediate elements can change by converting a neutron into a proton and emitting an electron (beta radiation), but the basic process is one radioactive element changes into another radioactive element by emitting radiation (alpha's or beta's). The Uranium to Lead Process has a half-life of about 4.5 billion years. Meaning that in 4.5 billion years 1 kilogram of Uranium will have changed to a half kilogram lead and a half kilogram Uranium is still left. This is approximate because there will also be some of those intermediate elements waiting to change.
What is the Sun's life span?
G2 stars like the Sun live about 10 billion years. Our Sun is about 4.5 billion years old, so it has another 5 billion years left.
How old is a fossil that has a radioactive material with a half life of 200 years if there is 25 percent of the original radioactive material left?
400 yrs
A particular element has a half life of 27 daysafter 54 days how much of the radioactive material is left?
The half life is the time it takes for half the atoms in a given sample to decompose. Knowing this then after 27 days there is half the amount left. After 54 days then there is half that half left so that's a quarter.
How much of the original material is left after 4 billion years?
P222O222R333N33
If a radioactive material has a half-life of 10 years what fraction of the material will remain after 30 years?
One eighth would be left.
If a radioactive element half life is 500000 years given 20 grams of the element how much is left after 4 half lives?
Just divide the original amount by 2, 4 times: 10; 5; 2.5; 1.25. The final number is the answer.
How much of an element is left after 2 half lives?
Depends on how many grams you started with, but obviously if half decays, half is left.
