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What is the half-life of a radioactive sample of bromine-74 in 25 minutes in a 4mg sample?
Wiki User
∙ 12y ago
The question does not make sense. The half-life of bromine-74 is, in fact, 25.4 minutes. In 25 minutes, that 4mg sample will decay to 2mg. In 25 more minutes it will decay to 1mg. In 25 more minutes it will be 0.5mg. And so on and so forth.
If you meant to ask how much will remain after a given period of time, please restate the question.
Wiki User
∙ 12y ago
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What is the time needed for half of a sample of a radioactive isotope to break down to form daughter isotopes called?
halflife
How does the length of the half-life of the element correspond to the radioactivity of the element?
The length of time required for half of a sample of radioactive material to decay
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
How do you identify beta decay?
A sample of 187 rhenium decays to 187-omium with halflife of 41.6 billion years. If all 188 osmium are normalized isotopes.
What is the required for half a sample of radioactive nuclei to decay called?
not sure you're asking exactly but I think the answer your looking for is radioactive half-life
What is the time needed for half of a sample of a radioactive isotope to break down to form daughter isotopes called?
halflife
How does the length of the half-life of the element correspond to the radioactivity of the element?
The length of time required for half of a sample of radioactive material to decay
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
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 must be true for radioactive dating to be possible with a certain sample?
The sample must contain radioactive elements.
What does the half life of a radioisotope correspond to?
The length of time required for half of a sample of radioactive material to decay
What is the significance of a half life of a radioisotope?
It tells what fraction of a radioactive sample remains after a certain length of time.
The original sample of a radioactive substance?
Yes, and the question is ... ?
The time it takes for half of the radioactive atoms in a sample of a radioactive element to decay is the element's?
i got no idea
What is the use of measuring the activity of a radioactive isotope in a sample to determine its age?
radioactive dating
What does the half-life a radioisotope indicate?
The rate of decay for a radioactive sample
What does a half life of a radioisotope indicate?
The rate of decay for a radioactive sample
