A 10 g sample of a radioactive element takes 16.21 mins to reduce into 6 g. Calculate the half-life and identify the element.
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A: Given : Radius of nucleus (R) = 3.26 fm No. of neutrons (N) = 10
Q: The half-life of a particular element is 330 days. What is its decay constant?
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Q: 09:1 g of medium is reduced by 2.1 mg in 5 years by a-decay. Calculate the half life period of…
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Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…
A: Given. t/T = 2 N(t) = No(1/2)t/T
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Q: A radioactive sample is observed for 160 days. After 160 days the amount of the sample is found to…
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Q: A certain isotope has a half-life of 6.4 h and an atomic mass of 87.29 u. What will the activity in…
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Q: A radioactive sample is observed for 5 days. After 5 days the amount of the sample is found to be…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The rate at which this…
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Q: A radioactive sample containing approximately 6.52×10¹3 radioactive nuclides has a half-life of 5730…
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Q: half-life of the isotope of iodine I-131 is 8 days. The activity of the sample at the moment is…
A: 1 Ci = 3.7 × 1010 decay/s Half life T1/2 = 8 days = 8 × 24 × 60 × 60 s = 6.912 × 105 s Rate of…
Q: Consider a pure 4.0g sample of radioactive gallium-67. If the half-life is 78 h, how much time is…
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Q: The half-life of a particular element is 330 days. What is its decay constant?
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Q: A freshly prepared sample of a certain radioactive isotope has an activity of 3.7 × 1011 decays/s.…
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Q: In a lab a radioactive sample is studied for 5 days. It was observed that the radioactive nuclides…
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Q: A radioactive sample studied in a lab is found to have a half-life of 48 hours. If the initial…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The half-life for a…
Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…
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Q: Use the equation for radioactive decay and solve for an algebraic expression for the time, “t” in…
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Q: Tritium has a half-life (half-life) of 12.33 years. In a sample of tritium, what percentage of 3H…
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Q: The half-life of a radioactive isotope is known to be exactly 1 h. a) What fraction of a sample…
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Q: Cadmium-107 has a half life of 6.52 hours. If you start off with sample which has an activity of 1.0…
A: The reactivity of the sample after time t is given by:
Q: The two samples A and B consist of an equal number of radioactive nuclei to begin with. 5 days later…
A: From the question it is given that: Let N0 be the amount of radioactive nuclei is present in initial…
Q: A radioactive sample is prepared; 10.78 hours later, only 1/16th of the original sample remains.…
A: Activity N=N0e-λt 10.78 hours later, only 1/16th of the original sample remains N016=N0e-λ10.78…
Q: A 10 g sample of a radioactive element took 12 days to reduce into 1 g. Calculate the half-life and…
A: Some configurations of protons and neutrons inside a nucleus are unstable. When an atomic nucleus is…
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Q: A radioactive sample studied in a lab is found to have a half-life of 25 hours. If the initial…
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Q: A 5 g sample of a radioactive element takes 102 days to reduce into 3 g. Calculate the half-life and…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
- Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to a mismatch between the number of neutrons and protons. Only a few configurations of neutrons and protons are stable.
- This decay will be exponential in nature and is given by,
Here N0 is the original number of radioactive nuclei present, t is the time, and t1/2 is the half-life of the radioactive sample. This is known as the exponential law of radioactive decay.
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