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What fraction of the parent isotope will be left after 30 minutes?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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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?
200
At what point do isotopes stop decaying?
A radioactive isotope will stop decaying when there are no more atoms of the isotope left.
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
What is the atomic number of unununium?
The atomic number of unununium (Uuu) is 111.The atomic weight of Uuu is 272 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
How much parent and daughter material will be left after two half lifes?
Only 25 % remain from the initial isotope.
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?
200
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
At what point do isotopes stop decaying?
A radioactive isotope will stop decaying when there are no more atoms of the isotope left.
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 are fraction remainders?
Left overs of that fraction,it depends.
There (is,are)almost 3 minutes left?
There are almost three minutes left. (minutes is plural)
If you did .95 minutes in an hour how many more minutes are left?
There are 2.4 minutes left
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.
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.
What fraction of an hour is forty minutes?
The correct answer is 2/3. 20 +20+20=60-20=40 minutes. There are still two 20s left from 60, so it is 2/3. ------------------------------------------------------------ Forty minutes out of sixty minutes can be reduced to 2/3. ------------------------------------------------------------ 40/60 = 4/6 = 2/3 = 0.6666666666666667
