Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. How much time is required for the activity of a sample of gallium-67 to fall to 5.05 percent of its original value? hrs Submit Answer Retry Entire Group No more group attempts remain

Q: The following exercise poses a question that can be answered by solving an equation. Give the…

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Q: Gallium-67 is used medically in tumor-seeking agents. What is the half-life of gallium-67 if 229…

A: Time = 229 hours  Reduced activity = 13.2 %  Half life time of gallium - 67 = ?

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A: Radioactive decay obeys first order decay kinetics   At=Aoe0.693t12×twhereAt= final activityAo=…

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Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. How…

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Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: Following information given in the question - Half life period of Iodine-131 , t1/2 = 8.04 days…

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Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A: Given  Half life of cesium - 129 =  32 hours  Remaining activity [ A ] = 14.5 %  Time ( t ) = ?

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Q: Exactly 0.1 of the radioactive nuclei in a sample decay perhour. Thus, after nhours, the fraction of…

A: (0.900)n = 0.5 taking lag of both side  n x log 0.900  = log 0.5 n = log 0.5 /log 0.9 n  = 6.58 hour…

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A: Introduction :  We have to calculate mass remains after 97.7 hours . Half life = 72.9 hours .

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A: Time required for the activity of a sample of iodine-131 to fall to 5.57 percent of its original…

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Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: Half-life of Fe-59 = 44.5 days To calculate - Time required for the Fe-59 sample to fall to 9.36 %…

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A: Hii there, since there are multiple questions posted. We are answering first question. If you need…

Q: Iodine-131 is administered orally in the form of Nal(aq) as a treatment for thyroid cancer. The…

A: We know, radioactivity is an example of first-order reaction.

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Q: Gallium-67 is used medically in tumor-seeking agents. What is the half-life of gallium-67 if 219…

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A: Given,  Half-life of Au = t1/2 = 2.69 days  Initial concentration = N0 = 2.8 mg  Time period = t =…

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Q: very unstable francium-221 is produced. Giver f-life of francium-221 is only 5.00 minutes, if th…

A: Given,  Half life time (t1/2) = 5.00 minutes Decay constant (k) = 0.693/5.00     =  0.1386 min-1…

Q: Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET).…

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Q: Iodine-131 is administered orally in the form of Nal(aq) as a treatment for thyroid cancer. The…

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Q: "ghment-take The half-life of iodine-131 is 8.04 days. How much time is required for the amount of a…

A: Using first order kinetics relations we can find k and t.

Q: 1. Gold-198 is used in the diagnosis of Ilver problems. If the half-life of Au-198 is 2.69 days: a…

A: Given-> Half life = 2.69 days Initial amount = 9.21 mg Time = 72.9 days

Q: The half-life of 90Sr is 29 years. What fraction of the atoms in a sample of 90Sr would remain 175…

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.