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It depends on the half life of the isotope. If the half life is, for example, 10 minutes, then 1/8 of the parent isotope will remain (30/10 = 3; 1/2^3 = 1/8).
Essentially, to work out the remaining fraction, you firstly divide the period of time by the half life (the answer in this case is X), and then do 1/2 to the power of x.
What else can I help you with?
What fraction of the radioactive atoms currently present will be left after four minutes if a sample of gas has a half life of two minutes?
After two minutes, half of the radioactive atoms will remain. After another two minutes, half of the remaining atoms will decay, leaving 1/4 of the original amount. Therefore, 1/4 of the radioactive atoms will be left after four minutes.
A radioactive sample has a half-life of 5.0 min What fraction of the sample is left after 20 min?
After 20 minutes, there have been 4 half-lives (20 min / 5 min per half-life). Each half-life reduces the sample by half, so the fraction of the sample left after 20 minutes is (1/2)^4, which is 1/16. Therefore, 1/16 of the original sample is left after 20 minutes.
At what point do isotopes stop decaying?
Isotopes do not stop decaying. The process of radioactive decay continues until the isotope reaches a stable state, which could be a different isotope or a non-radioactive element. The rate of decay can vary depending on the specific isotope.
What is the relationship between radioactive isotope and radioactive dating?
In radiometric dating, the amount of a certain radioactive isotope in an object is compared with a reference amount. This ratio can then be used to calculate how long this isotope has been decaying in the object since its formation. For example, if you find that the amount of radioactive isotope left is one half of the reference amount, then the amount of time since the formation of the object would be equal to that radioactive isotope's half-life.
Is the isotope As with a left subscript of 74 or is the isotope Ge with a left subscript of 74 more likely to be radioactive?
Sorry guys, that should say 'superscript' up there, not subscript. My apologies, i don't know how to go back and edit my qeustion. Also, if it helps, arsenic has an atomic weight of 74.921 and germanium has an atomic weight of 72.64. Thanks in advance
How much parent and daughter material will be left after two half lifes?
Only 25 % remain from the initial isotope.
What is the isotope symbol for actinium?
The chemical symbol of actinium is Ac.The symbol of an isotope:- as superscript to the left of Ac is the atomic mass of the isotope- as subscript to the left of Ac is the atomic number 89
When was Left Fraction created?
Left Fraction was created in 1940.
In binary tree is it necessary that a left child to the left of parent is less than the parent?
no
What fraction of the radioactive atoms currently present will be left after four minutes if a sample of gas has a half life of two minutes?
After two minutes, half of the radioactive atoms will remain. After another two minutes, half of the remaining atoms will decay, leaving 1/4 of the original amount. Therefore, 1/4 of the radioactive atoms will be left after four minutes.
What are fraction remainders?
Left overs of that fraction,it depends.
If you did .95 minutes in an hour how many more minutes are left?
There are 2.4 minutes left
There (is,are)almost 3 minutes left?
There are almost three minutes left. (minutes is plural)
A radioactive sample has a half-life of 5.0 min What fraction of the sample is left after 20 min?
After 20 minutes, there have been 4 half-lives (20 min / 5 min per half-life). Each half-life reduces the sample by half, so the fraction of the sample left after 20 minutes is (1/2)^4, which is 1/16. Therefore, 1/16 of the original sample is left after 20 minutes.
The half-life of a certain radioactive isotope is 12 hours If you start out with 10 g of the isotope after 1 day there will be?
If you take one day equal to 24 hours, then 1 day constitutes 2 Half lives. Mass of isotope left after 12 hours=10/2=5g Mass of isotope left after 2 half lives or 1 day=5/2=2.5g.
At what point do isotopes stop decaying?
Isotopes do not stop decaying. The process of radioactive decay continues until the isotope reaches a stable state, which could be a different isotope or a non-radioactive element. The rate of decay can vary depending on the specific isotope.
How long has plutonium got left?
If you think to the half life this value for the isotope Pu-29 is 2,41.10e+4 years. Each isotope has another half life.
