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lekaje2375
08.01.2020 •
Chemistry
The half-life of a certain element is 100 days. how many half-lives will it be before only one-fourth of this element remains? 4
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Ответ:
Ответ:
Answer;
2 half lives
Explanation;
-Half life is the time taken by a radioactive isotope to decay to half of the original amount.
-For example; if the original mass is 100% the time it takes to decay to 50% is the half life.
-Therefore, in our case; for the element to decay from 1 whole to a half of the element, is one half life, then decaying from a half to one-fourth of the element will be another half life, which means there are two half lives for an element to decay to one-fourth of the element.
Ответ:
Explanation:
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