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What is the half-life of a radioactive sample of bromine-74 in 25 minutes in a 4mg sample?
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.
What else can I help you with?
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?
After two minutes, half of the radioactive atoms will remain. After another two minutes, half of the remaining atoms will decay, leaving 1/4 of the original amount. Therefore, 1/4 of the radioactive atoms will be left after four minutes.
What is the half life of a 0.5 g sample of radioactive that decayed to 0.125 g in 9.6 min?
To find the half-life of the radioactive sample, we can use the formula for exponential decay. The sample decayed from 0.5 g to 0.125 g, which means it underwent three half-lives (0.5 g to 0.25 g to 0.125 g). Since this decay occurred over 9.6 minutes, we divide 9.6 minutes by 3, resulting in a half-life of 3.2 minutes.
What is the halflife of Carbon-11?
The half-life of Carbon-11 is approximately 20 minutes. This means that it takes about 20 minutes for half of a sample of Carbon-11 to decay into a stable isotope. Carbon-11 is commonly used in positron emission tomography (PET) imaging due to its short 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?
After two minutes, half of the radioactive atoms will remain. After another two minutes, half of the remaining atoms will decay, leaving 1/4 of the original amount. Therefore, 1/4 of the radioactive atoms will be left after four minutes.
How long will it take half of a radioactive sample to decay?
The time it takes for half of a radioactive sample to decay is known as the half-life. Each radioactive element has a unique half-life, which could range from fractions of a second to billions of years. The half-life remains constant regardless of the size of the initial sample.
What must be true for radioactive dating to be possible with a certain sample?
For radioactive dating to be possible, the sample must contain a measurable amount of a radioactive isotope with a known decay rate. The sample must be isolated from sources of contamination that could affect the accuracy of the dating. Additionally, the sample must have remained a closed system since the radioactive isotopes were incorporated, in order to accurately measure the decay products.
How do you calculate the activity of a radioactive sample?
The activity of a radioactive sample is calculated using the formula: Activity = λ*N, where λ is the decay constant of the isotope and N is the number of radioactive nuclei present in the sample. The unit of activity is becquerel (Bq).
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.
What is the halflife of Carbon-11?
The half-life of Carbon-11 is approximately 20 minutes. This means that it takes about 20 minutes for half of a sample of Carbon-11 to decay into a stable isotope. Carbon-11 is commonly used in positron emission tomography (PET) imaging due to its short half-life.
The original sample of a radioactive substance?
Yes, and the question is ... ?
Does the size of a radioactive sample affect half-life?
No, the size of a radioactive sample does not affect its half-life. The half-life is a characteristic property of a radioactive isotope, defined as the time it takes for half of the radioactive atoms in a sample to decay. This property is intrinsic to the isotope itself and remains constant regardless of the amount of material present. Thus, whether you have a small or large sample, the half-life will remain the same.
A sample of radioactive isotope has a halflife of 1 day how much of the original sample will be left at the end of the fourth day?
If a sample of radioactive material has a half-life of one week the original sample will have 50 percent of the original left at the end of the second week. The third week would be 25 percent of the sample. The fourth week would be 12.5 percent of the original sample.
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
