The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min) argon-44 12 lead-196 37 potassium-44 22 indium-117 43 How long would it take, in minutes, for the amount of potassium-44 to decrease from 96.0 mg to 12.0 mg?

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: Given  Half life of Lead - 196     = 37 min  Initial Amount (A)0          =  64 mg Remaining Amount…

Q: The half-life of Phosphorus-32 is 14.3 days. If you start with 100 grams of it, how long will it…

A: Half life of a first order reaction is given by , t1/2=0.693k Write the expression for first order…

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Q: Iodine-131 has a half-life of 8.0 days. How long will it take 10 µg of 131I to decrease to 1/100 of…

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Q: the half life of radioactive element unobtanium-37 is 10 seconds. If 80 grams of unobtanium-37 are…

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Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

A: Consider the given information is as follows; Half-life for lead-196  t12 = 37 min Initial amount of…

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Q: Fluorine-18 undergoes positron emission with a half-life of 1.10 × 10² minutes. If a patient is…

A: Solution :   Half-life is the time required to reduce the concentration of the compound to half of…

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A: The initial radioactivity of a sample is inversely proportional to the half-life. A shorter…

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

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Q: If you start with 71.0 grams of a radioactive substance with a half life of 3 days, how much will be…

A: Here given, Initial amount (N0) = 71 grams Half life (t1/2) = 3 days Time (t) = 15 days Amount left…

Q: If the amount of radioactive phosphous-32 in a sample decreases from 1.2 g to 0.30 g in 28.6 days,…

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Q: The half-lives of different radioisotopes are given in the table. Half-life (min) 12 37 potassium-44…

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Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A: Formula for radioactive decay is given as,

Q: A radioactive isotope has a half-life of 11 minutes.  How many grams of a 18.68 g sample remain…

A: Given Half life = 11minutes = 11*60= 660 second Sample weight = 18.68g Time = 44 minutes = 44*60=…

Q: Iodine 1 31 has a half life of about 8 days.  In 40 days what percent of the original sample would…

A: Formula used :-  t1/2 = .693/k  Where k is rate constant. k = 2.303/t log [A0]/[A]

Q: Thorium-227 has a half-life of 18.4 days. How much will be left of a 100 mg sample in 60 days? Round…

A: Given a sample of Thorium 100 mg. And half life of Thorium-227 is 18.4 days.We have to calculate the…

Q: Iodine-131 has a half-life of 8 days. What fraction of the original sample would remain at the end…

A: Half life is the period at which concentration of reactant reduces half of its original value.

Q: 8. Strontium-90 has a half-life of 28.1 years. Starting with 2.08 mg of this isotope, what is the…

A: Radioactive decay follows first order kinetics. Using this we will calculate all parts of questions.

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A: Radioactive decay follow first order kinetics

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A: Nuclear chemistry can be defined as the branch of chemistry that deals with radioactivity, nuclear…

Q: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: Radioactive decay follows First order kinetics .Initial amount of iodine-131 is 32 mCiHalf-life of…

Q: If a radioisotope's half-life is 2 minutes, after two half-lives there is left   0% of the original…

A: Given, a radioisotope's half-life is 2 minutes.we are asked to calculate the amount of original…

Q: A solution of sodium iodine containing the radioactive isotope Iodine-131 was given to a patient. If…

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Q: 90 The half-life of "Sr is 28 years. How long will it take for a given sample of "Sr to be 83%…

A: 1) half life = 28 years  Decomposed = 83 %  2) half life = 39.4 days

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A: Determine the Ratio of Decay Rates: We need to calculate the ratio between the decay rates of the…

Q: The isotope 208^TI undergoes beta decay with the half-life of 3.1 minutes calculate the amount…

A: Half life = t1/2 = 3.1 minTo determine rate constantk t1/2  = ln (2)k =0.6933.1 min=0.22 min-1

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: A radioactive isotope has a half life of 16.9 minutes. How long will it take for the radiation from…

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Q: The iodine-131 nuclide has a half-life of 8.0 days. If you originally have a sample containing 728-g…

A: Known: Half-life  = 8.0 days Original mass = 728 g Time elapsed = 6.86 weeks = (6.86 ×7)…

Q: Cobalt-60 is used extensively in medicine as a source of g-rays. Its half-life is 5.27 years. How…

A: Given Half life ( t1/2 )   = 5.27 year  Initial Activity ( A0 )  = 100 %  Remaining amount ( At ) =…

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the…

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Q: How long would it take, in minutes, for the amount of lead-196 to decrease from 80.0 mg to 10.0 mg?

A: Since we know that radioactive isotope decay occurs by first order reaction . So using half life…

Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

A: This problem is based on Nuclear Chemistry.Here, we have to find the final amount ofargon-44 in the…

Q: Iodine-131 has a half-life of 8.0 minutes. How many half lives will pass in 120 minutes?

A: Half life is defined as the time required for a substance to reduce to half of it's initial…

Q: If Bismuth-210 has a half-life of 5.0 days and you started with 30.59 grams and you stopped the…

A: The question is based on the concept of chemical kinetics. We have  to calculate quantity of…

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.