The half-lives of different medical radioisotopes are given in the table. If the initial amount of phosphorus-32 is 2.0 mCi, how much phosphorus-32 is left in the body after 42 days? Radioisotope Half-life (days) arsenic-74 18 iodine-131 8 phosphorus-32 14 chromium-51 28

Q: Uranium-238, 238U, has a half-life of 4.51 x 109 years. How long will it take for 1.0 g of 238U to…

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

A: Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change…

Q: 29) a rock from the moon was found to contain 1.0 x 10* g (A,) of uranium-238 and 4.0 x 10“ g…

A: The half-life of a radioactive isotope (t1/2 ): All radioactive decay first-order reaction kinetics.…

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

A: We know that,→ Radioactivity Phenomena follow first oroen kinetics.So, Rate = KA1 K → Rate…

Q: Carbon-14 undergoes nuclear decay and has a half-life of 5,730 years. How many moles will be left…

A: Given :-  initial amount of sample = 50 moles  half life (t½) = 5730 years  To calculate :-  amount…

Q: Cobalt-60, used in cancer therapy, decays by beta and gamma emission. The decay constant is 4.18 x…

A: Half-life is the interval of time required for one-half of the atomic nuclei of a radioactive sample…

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: Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life of…

A: Half life period: The time required to decay half of the initial amount is known as half life…

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

A: Solution :     Half-life is the time required for the given amount of radioactive sample to reduce…

Q: Use the table on the right to answer the following questions. 11. How long is a half-life for…

A: Note : As per our guidelines , we are supposed to answer only subparts of first question (11 to 14)…

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

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Q: A radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013…

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Q: lodine-131 is used in the treatment of tumors in the thyroid gland. Its half-life is 8.1 days.…

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

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

A: Here by applying first order disintegration equation ,we can determine the age of artifacts.

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

A: It is radioactive substance. Every radioactive substance follows first order reaction kinetics. So,…

Q: 2.103 Phosphorus-32 has a half-life of 14.3 days. Beginning with a 2.00 pug sample of this…

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Q: 6. A rock contains 0.257 mg of lead-206 for every milligram of uranium-238. The half-life for the…

A: Given, Half-life - 4.5 × 109 yr. 1 mg U-238 contains 0.257 mg of Pb-206.

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

A: Answer: Since, nuclear reactions are first order reactions, therefore to solve this question we will…

Q: Approximately how many half-lives must pass for the amount of radioactivity in a substance to…

A: Given, radioactivity of the substance decreases below 1% of its initial level.The initial percentage…

Q: Suppose 67.5% of a sample of radioactive 24Na has decayed after one day. Estimate the half-life of…

A: Solution is given below in next step

Q: 39. If the half-life of phosphorus-32 is 14.3 days, how much of a 200. mg sample of phosphorus-32…

A: Given data,  Half life of phosphorus-32 is 14.3 days  Total amount of Phosphorus-32 is 200 mg

Q: Be sure to answer all parts. A freshly isolated sample of 90y was found to have an activity of 9.7 x…

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Q: A

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

A: We have to calculate the amount lost .

Q: 11) The decay curve shown below approximates the decay of carbon-14. What is the approximate…

A: Half life of any reaction is defined as the time required for the reactant to reduce to 50% of its…

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

A: Given: Initial amount of potassium-44 = 96.0 mg Final amount of potassium-44 = 12.0 mg Half-life for…

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. How long would it take a sample to decay…

A: Given- Half life=5.26 years  Initial amount=1.90mg Final amount=1.50mg

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

A: For the Potassium-44,  Half life, t1/2 = 22 min Initial amount of Potassium-44, A0 = 64 mg After…

Q: 44 of 48 If the half-life of a radioisotope is 3 years, the radioactivity remaining in a sample of…

A: (a) the half life is 3 year, Now, amount of sample remaining after 6 years is, 6 years means 2 half…

Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) If the…

A: We have to used equation of first order rate constant. As we know nuclear reaction follows first…

Q: Phosphorus-32 is a radioisotope used to detect certain types of tumors. P-32 has an effective…

A: Phosphorus-32 is a radioisotope used to detect certain types of tumours. P-32 has an effective…

Q: On April 26, 1986, an explosion at the nuclear power plant at Chernobyl Ukraine, released the…

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Q: Calculate the half-life of an isotope if 155.2 mg disintegrates to 19.40 mg in 12.9 min.

A: Given    Initial Amount [ A ]0         = 155.2 mg    Remaining amount [ A ]t  = 19.40 mg   Time ( t…

Q: phosphorus -32 decays to form sulfur -32. The half life of phosphorus -32 is 12 days. How much…

A: Given,Phosphorus-32 decays to form sulphur-32The amount of Phosphorus-32 initially present is 62…

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

A: We have to calculate the age of artifact.

Q: The cloth shroud from around a mummy is found to have a 14C14C activity of 8.7 disintegrations per…

A: Calculation of age of shroud using Carbon Dating method :

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

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Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 39.9 days decay…

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

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Q: The half life of carbon-14 is 5730 years.it takes 870.98 years for carbon 14 to decay tp 90 mg. what…

A: The radioactive decay follows first order kinetics.

Q: A rock contains 0.257 mg of lead-206 for every milligram of uranium-238. The half-life for the decay…

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

A: Given: Half life of argon = 1212 min. Time passed = 2424 min. And initial amount of argon = 4.8 g.

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

A: Given: The half-Life of lead= 37 min Initial Concentration of lead [A]0= 68.0 mg Final Concentration…

Q: A bone has a carbon-14 decay rate of 4.98 disintegrations per minute per gram of carbon. If a living…

A: Solution : N0= 4.98 dpm N(t) = 15.3 dpm  t1/2 = 5715 years  t = ?

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that -  Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…