The half-life of a particular element is 330 days. What is its decay constant?
Q: The radionuclide 64Cu has a half-life of 12.7 h. If a sample contains 5.5 g of initially pure 64Cu…
A: Half-life of 64Cu, T12=12.7 h The initial mass, m0=5.50 g The decay time interval, t1=14 ht2=16 h…
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Q: The nucleus (15 8) O has a half-life of 122.2 s; (19 8) O has a half-life of 26.9 s. Assume that at…
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Q: The radioactive isotope 234pa has a half-life of 6.70 h. A sample containing this isotope has an…
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Q: The half-life of radon-222 is about 3.823 days. (a) Determine the decay constant for radon-222. s -1…
A: Given data: The half life of randon-222 is t1/2=3.823 days=330307.2 s Part a: The expression for…
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Q: You have an istope with a decay constant of 2.48x10-³s-¹. What is the half life of isotope?
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Q: The nucleus (15 8) O has a half-life of 122.2 s; (19 8) O has a half-life of 26.9 s. Assume that at…
A: The following data are given:
Q: The half-life of the radioactive nucleus 226 88Ra is 1.6 ᵡ 103 yr. If a sample initially contains…
A: The expression for the decay constant(λ) is given as, λ = ln 2t1/2, where t1/2 is the half-life…
Q: Tritium has a half-life of 12.5 y against beta decay. Determine fraction of a sample which will…
A: (1) We have given Th=12.5 years Here Th= half life We know that NNo=12tTh NNo=122512.5=122=14 N=No/4…
Q: A particular radioactive sample undergoes 2.50××10^6 decays/s. a) What is the activity of the…
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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: 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: A purified sample of Mo-99 contains 370 million Bq. a. What mass does this represent if the…
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Q: The half-life of 43100Tc, a ß- emitter, is 15.8 s. a). How many atoms of 43100Tc are present in a…
A: Half life of decay = 15.8 Activity of sample = 0.2×10-6 = 3.7×1010 ×0.2×10-6 = 7400Bq
Q: The half-life of radon-222 is 2.8 days. How many days would it take for the activity due to radon in…
A: Given that:- Half life of radon-222=2.8 days
Q: A 200.0 - mCi sample of a radioactive isotope is purchased by a medical supply house. If the sample…
A: The time taken for the activity reduced to 20.0 mCi.
Q: unlabeled container of radioactive material has an activity of 78 decays/min. Four days later the…
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Q: The half-life of 231Pa is 3.25 × 104 years. How much of an initial 10.41 µg sample remains after…
A: Given that half life of 231Pa is 3.25* 10^4 year and initial amount of sample is 10.41microgram.…
Q: a) What is the decay constant of fluorine-17 if its half-life is known to be 66.0 s? λ = b) How…
A: Given value--- Half life time of F -17 (t 1/2) = 66 sec. We have to find--- What is the decay…
Q: If it is known that 87% of an initial radioactive sample remains after 3 days, what is the decay…
A: Given: The amount of radioactive decay is 87% of the initial amount. The time is 3 days.
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