cranfordjacori
04.02.2020 •
Biology
Ahalf-life of a radioactive substance is the amount of time needed for one half of to decay into a stable isotope.
the neutrons in the nuclei
its beta particles
the nuclei in a sample
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Ответ:
The correct answer is the nuclei in a sample.
Explanation:
Half life is defined as the time taken for half of the reaction to complete. This is also defined as the time in which the concentration of a reactant is reduced to half of its original value.
General expression for half life period of a reaction for nth order is:![t_{1/2}=\frac{1}{[A_0]^{n-1}}](/tpl/images/0500/6219/eadb6.png)
where, n = order of the reaction
Hence, the correct answer is the nuclei in a sample.
Ответ:
Kinda bad
Explanation:
The lesson in english this morning reminded me how lonely i am and that i have no friends :)