Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is 44.5 days. How much time is required for the activity of a sample of iron-59 to fall to 10.6 percent of its original value?

Q: Phosphorus-32 is a radioisotope used in the treatment of leukemia and pancreatic cancer. If the…

A: Given, Phosphorus-32 in a sample decreases from 1.2g to 0.30g in 28 days . We have to calculate half…

Q: Gadolium-153, which is used to detect osteoporosis, has a half life of 242 days. What percentage of…

A: Radioactive decay follows first order kinetics.Equation for half life, t½ = ln2 / kTherefore k = ln2…

Q: Iodine -125 emits gamma rays when it decays to Tellerium -125 and has a half life of 60 days. If…

A: Given, half life of Iodine -125 t1/2 = 60 days            initial mass of Iodine -125 = 0.020 g The…

Q: The carbon-14 activity of some ancient Peruvian corn was found to be 10 disintegrations per minute…

A:

Q: Iron-59 is commonly used as a source of B particles. How long does it take for 87.5% of a sample of…

A: Radio active decay is an example of 1st order reaction. and for 1st order reaction the rate law is…

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

A:

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: Suppose the amount of a certain radioactive substance in a sample decays from 8.50 mg to 3.80 mg…

A: Given Initial concentration of radioactive substance =          8.50mg Final concentration of…

Q: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

A:

Q: The half life for the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: Half-life of carbon-14 decay = 5730 years. Activity of carbon-14 in the sample = 51 Bq. And…

Q: A radioactive substance decays at a rate proportional to the amount present. If 45 percent of a…

A: Given :   Time (t) = 20 years  Percentage of substance decays = 45 %

Q: The half-life of 18F, which is utilised in medical imaging, is 110 minutes. After 300 minutes, what…

A: Given half life = 110 minutes time = 300 minutes

Q: A radioactive element has a half-life of 1.1 hours. How many hours will it take for the number of…

A:

Q: If 29.5% of the original amount of 14C is present in a wooden tool at the time of analysis, what is…

A: Since the carbon decay is a first order kinetics reaction Hence for the first order reaction we can…

Q: Iodine – 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a…

A: The radioactive decay always follows the first order kinetics. The radioactive decay of I-125 must…

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: What is the half-life of polonium-210 if it takes 828 days for a 100.0 g sample to be reduced to 1.6…

A: Polonium-210 is a radioactive element so it's decay is followed first order kinetics.

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

A: Answer: Suppose initial quantity of Iodine-131 is N0  Then remaining after time t will be…

Q: The half life for the decay of carbon-14 is 5.73 × 10 years. Suppose the activity due to the…

A: Given that : Half-life of carbon-14 = 5.73 x 103 years The activity due to the radioactive decay =…

Q: The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the…

A:

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: Carbon-14 has a half-life of 5,730 years. If a sample contained 70 mg originally, how much is left…

A: Carbon-14 has a half-life of 5,730 years. If a sample contained 70 mg originally, how much is left…

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

A:

Q: What is C-14 activity in a sample that is 2.0 x 104 yr old? Assume that C-14 activity in the living…

A:

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

A:

Q: The half-life of oxygen-15 is 124 ss. If a sample of oxygen-15 has an activity of 4800 BqBq, how…

A: Half-life of a reaction is the time at which the initial concentration of the reactant becomes half.…

Q: One of the radioactive isotopes used in medical treatment or analysis is iodine-131. The half-life…

A: The relationship between the decay constant and the half-life period is given below.

Q: lodine - 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a…

A:

Q: It takes 870.98 years for carbon-14 to decay to 90 mg. What is the half life of carbon-14?

A:

Q: What is the half-life of iron-55 if 5.93 years are required for the activity of a sample of iron-55…

A:

Q: At a given time, there are 1.2 mg of a radioactive substance present. After 6 hours there is only…

A: To solve this question, first find out the rate constant of radioactive substance and using that…

Q: The half-life of radiogold is approximately 3 days. If 1.5 g of this has been administered to a…

A:

Q: What is the half-life of gallium-74 if 32.1 minutes are required for the activity of a sample of…

A:

Q: Radium-223 decays with a half-life of 11.4 days. How long will it take for a 0.240 mol sample of…

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 the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: Half-life of carbon-14 decay = 5730 years. Activity of carbon-14 in the sample = 90 Bq. And…

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

A:

Q: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

A: Given : Half life of phosphorus-32 = 14.3 days And the final activity of sample of phosphorus-32 =…

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

A:

Q: The half-life of Palladium-100 is 4 davs. After 20 days a sample of Palladium-100 has been reduced…

A: The nuclear reactions of the radioactive elements are generally the first-order reactions. The…

Q: The half-life of tritium, H-3, is 12.3 years. How much time would it take for a sample to drop to…

A:

Q: The half life of radium-226, the first radioactive element discovered, is 1,620 years. If a sample…

A: Radioactive reactions are of first order. The relationship between half life t1/2 and rate constant…

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

A:

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.