What is the half-life of lead-210 if 47.4 years are required for the activity of a sample of lead-210 to fall to 20.9 percent of its onginal value? yrs

Q: The half-life of nucleus Rn-222 is 3.88 days. How many mg of a 5000 mg sample of Rn-222 remains…

A: The half life of a given reaction refers to the time required by a given compound to reduce to half…

Q: It takes 4 h 39 min for a 2.00-mg sample of radium-230 to decay to 0.25 mg. What is the half-life of…

A: Half life of first order kinetic reaction is given by:

Q: What is the half-life of bismuth-214 if 62.5 minutes are required for the activity of a sample of…

A:

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 = ?

Q: Question attached

A: Given:-               The first order reaction formula is: Half life T12 = 13.27 hours…

Q: What is the half-life of phosphorus-28 if 0.537 seconds are required for the activity of a sample of…

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

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Q: 6. Cobalt-60 is used extensively in medicine as a source of gamma ray. Its half life is 5.27 years.…

A: Nuclear reaction follows first order kinetics. Write the equation for calculating rate constant of a…

Q: Iodine-131 has a half life of 2.2 × 10-2 year. How long will it take to reduce a 133 g sample of…

A: Half Life = t1/2 = 2.2 * 10-2 yeark t1/2 = ln (2)k * 2.2 * 10-2 year = 0.693k = 31.5 year-1

Q: What is the half life of radioistope if it decays to 12.5% of its radioactivity in 12 years?

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Q: What is the half-life of thallium-210 if 2.40 minutes are required for the activity of a sample of…

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

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

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

A: The half-life (t1/2) of Nitrogen-13 is provided as 10 minutes.

Q: The half-life of 19TC, a ߯ emitter, is 15.8 s. 43 (a) How many atoms of 13Tc are present in a…

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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 %…

Q: What is the half‑life of an isotope that decays to 6.25%6.25% of its original activity in 24.2…

A: The half-life  is the time it takes for the concentration of that substance to fall to half of its…

Q: The half-life of 87Sr is 2.80 h. Calculate how much time it would take for an isolated quantity of…

A: Time required to decay for a radioactive molecule,t = 2.303Klogaa-x Where a is the initial amount…

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

A: Detail mathematical calculation is shown below

Q: What is the half-life of uranium-234 if 4.49×10° years are required for the activity of a sample of…

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

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

Q: The half life of 231Pa is 3.25 x 104 years. How much of an initial 10.40 microgram sample remains…

A: Formula used to calculate the sample that remains after 3.25X105 years,

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.

Q: Phosphorus-32 is used in biochemical studies to follow the pathway taken by metabolites. Its…

A:

Q: After 119 days have elapse 1/21 of a radioisotope sample remains undecayed. What is the half-life of…

A: Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A…

Q: What is the half-life of iodine-123 if 37.7 hours are required for the activity of a sample of…

A: Radioactive decays follow first order kinetics.

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

A:

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

A: ⊙ Radioactivity, phenomena follow first order            kinetics                K =2.303t…

Q: 3. Cobalt-60 is a strong gamma emitter that has a half-life of 5.26 yr. The cobalt-60 in a…

A: Given, half life of Cobalt-60 =5.26 yr date of purchase of sample = June 2010

Q: Nickel-57 undergoes β+ decay (t1/2 = 36.0 hr) to form cobalt-57. How long will it take for 0.150 mol…

A: Radioactive decay is related to first order kinetics. For first order reaction: First order…

Q: After 19 days have elapsed, 1/21 of a radioisotope sample remains undecayed. What is the half-life…

A:

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

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Q: Sr is an inotope produced from atmosphenic testing of nuclear bombs. If naclear testing was stopped…

A:

Q: What is the half-life of chromium-56 if 12.8 minutes are required for the activity of a sample of…

A: Radioactive decay follow first order kinectics . Half life for first order reaction  = 0.693/k  k is…

Q: The half-life for P-32, a radionuclide used in DNA sequencing, is 14.28 days. Calculate the…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

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

A:

Q: If 25%(1/4)of a radioactive element remains after1,000years, what is the half-life?

A: Radioactive elements are those elements whose nuclei are highly unstable and hence undergo…

Q: Na-24 is used in medicine to study the circulatory system. If one gram of Na-24 decomposes by beta…

A:

Q: If a 40.00 mg of I-131 decays 20.00 mg in 10 days and in another it would decay to 10.0O0 mg, what…

A:

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

A:

Q: How many hours are needed for a 16.0 g sample of Si-31 to decay to 2.0 g? The half-life for Si-31 is…

A: Solution -

Q: If a tree dies and the trunk remains undisturbed for 1.635 × 10⁴ years, what percentage of the…

A: Given, time t = 1.6 x 104 years , half life t1/2 = 5730 years

Q: What is the half-life of thallium-209 if 4.20 minutes are required for the activity of a sample of…

A: The radioactive disintegration is a type of first order kinetics which has its half-life given as -…

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

A:

Q: A clinical technician finds that the activity of a sodium-24 sample is 96 cpm. What will be the…

A: The decay reactions are first order reactions. Since we know that the relationship between the…

Q: What is the half-life of uranium-238 if 9.10×109 years are required for the activity of a sample of…

A: Given: 9.10×109 years are required for the activity of a sample of uranium-238 to fall to 24.7…

Q: What is the half-life of magnesium-20 if 1.24 seconds are required for the activity of a sample of…

A:

Q: A sample of sodium-24 with an activity of 12 millicuries (mCi) is used to study the rate of blood…

A: Radioactive reactions are first order reaction. Initial activity of Sodium-24, No = 12 mCi Half life…

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.