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18 grams are one fourth of the original sample mass of 72 grams. Accordingly, the half life is 6.2/4 = 1.55 days.

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Q: What is the half life of a radioactive isotope if it takes 6.2 days for a 72 gram sample to decay to 18grams?
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Related questions

What is half life of a isotope?

The half life of an isotope refers to the rate at which a radioactive isotope undergoes radioactive decay. Specifically, it is the amount of time it takes for half of a given sample of a radioactive isotope to decay.


The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.?

its called Half-Time...


When an isotope is blank it does not undergo radioactive decay?

when an isotope is it does not undergo radioactive decay


If the isotope have short half lives is that mean that the isotope is in a stable condition?

No. Only radioactive elements have half-lives, the half-life is the time that it will take for half of the atoms in a sample of a radioactive isotope to decay into another element or isotope. This is a constant property of the isotope and does not depend on the sample size. Stable isotopes never decay.


What does the half life of a radioisotope represent?

It tells what fraction of a radioactive sample remains after a certain length of time.


What is the radioactive decay law?

The rate of decay (activity) of a radioactive isotope is proportional to the number of atoms of the isotope present.


What is radioactive decay law?

The rate of decay (activity) of a radioactive isotope is proportional to the number of atoms of the isotope present.


The time it takes for 50 percent of the nuclei in a radioactive sample to decay to its stable isotope is called?

the half-life


How long will it take half of a radioactive sample to decay?

The length of time depends on the element and isotope, but the point at which half of the sample has decayed is known as the half-life.


What is the explanation for the process of radioactive half-life?

The half-life of an isotope is the time it takes for half of the atoms of a sample to decay.


What is the final result of radioactive decay?

radioactive isotope


Determine the amount of time it takes for three fourths of a radioactive sample of an isotope of bromine to decay the half-life of the isotope is 16.5 hours?

About 33 hours