Vhat is the half-life of a radioisotop

Q: How long will it take a radioactive sample of iodine-131 (half-life 8.07  d ) to lose 99.2  %  of…

A: The given disintegration reaction is first order reaction. Half life t1/2 = 0.693 / K 8.07 days =…

Q: Technetium-99m, a metastable state of technetium-99 commonly used in nuclear medicine, has a…

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Q: Complete the table for the radioactive isotope. Half-life Initial Amount After Isotope (years) |…

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Q: What is the half-life (t1/2) of a radioisotope if 1000 grams of the sample decays to 125 grams in…

A: The nuclear half-life is amount of time it takes for half of sample to decay radioactively.…

Q: 15. A mammoth skeleton has a carbon-14 decay rate of 0.48 disintegrations per minute per gram (0.48…

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Q: What physical constants must be known to use radioactive dating?

A: Radioactive dating is the technique used to determine the age of a rock, wood, or either old…

Q: Summarize medical applications of radioisotopes

A: Radioisotopes have many applications in both diagnosis and medical treatment. The radiations emitted…

Q: Suppose that 10 units of beryllium are present in a living organism and that the half-life of…

A: Here i have calculated the age of material

Q: tled Section 46. The carbon-14 content of an ancient piece of wood was found to be one- sixteenth of…

A: we know Radioactive decay constant (K)= 0.693t1/2Given ,t1/2 = 5730 yearNow ,  K= 0.6935730…

Q: Calculate the binding energy per nucleon (EB,He)/A for a He4 atom. Calculate the binding energy per…

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Q: You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if…

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Q: If the half life of a radioactive element is 32.8 years, how many years will it take for a sample to…

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Q: After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the half-life…

A: Amount of radioisotopes remaining = 112 of the initial amount Number of days taken for the decay =…

Q: An ancient wood sample is known to be 2500 years old. a. Knowing that the half-life of carbon is…

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Q: Compute the binding energy of 7Li nucleus, whose experimentally determined mass is 7.016004

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Q: 2. If you started with a sample of 600 radioactive nuclei, how many would remain undecayed after 3…

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Q: Calculate the half-life of a radioisotope if it takes 24 years for a sample to decay to 12.5% of its…

A: Radioactive decay follows first order kinetics. Half-life is the time taken by a radioisotope to…

Q: If you start with 1 million atoms of a particular radioactive isotope, how many half-lives are…

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Q: 80 70 60 50 40 30 20 10 1. 4. 10 Time (Days) a. How many atoms are in the original sample size of…

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Q: NUCLEAR CHEMISTRY: The mass defect of nuclei (193X ) is 1.091 amu. Estimate the total binding energy…

A: Here total no of nucleons = no of protons + no of neutrons = mass number = 193.

Q: The age of a tree trunk is estimated using radioisotope dating. Hypothetically, instead of carbon…

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Q: Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric…

A: 5730 Given, half-life of C-14 = years. 65.1% of C-14 found in living trees of the same type had…

Q: Can the half-life of a given isotope be manipulated or changed to suit human needs?

A: Answer

Q: A radioisotope “X” has a half-life of 2.5 years. Determine (to the nearest 0.1 mg) how much of a…

A: All the radioactive reactions follow first order kinetics . The term half life is defined as the…

Q: The positrons emitted by 11C have a maximum kinetic energy of 0.99 MeV, and those emitted by 15O…

A: Given: The positrons emitted by 11C have a maximum kinetic energy of 0.99 MeV. The positrons emitted…

Q: A rock was dated using Carbon-14 (half life = 5730 years). If the percentage of the parent atoms…

A: Given data contains, Half-life of C-14 is 5730 years. Percentage of parent atoms is 12.5%. N0 is…

Q: what fraction of a radioisotope has decayed after two half-lives?

A: The time required for a quantity of a radioisotope to decay by half is known as the half-life time.…

Q: You take a course in archaeology that includes field work. An ancient wooden totem pole is excavated…

A: The age of the sample is calculated as: Age=n×t12 where n is the number of half lives and t1/2 is…

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

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Q: How many of the nuclei of a radioactive sample containing 2048 nuclei decay in 3 years, if it's half…

A: Half life of a radioactive sample is the time in which half of the sample is decayed i.e. 50% of the…

Q: A rock is analyzed in the laboratory for radiometric dating and found to contain 1/8 parent atoms…

A: Any process that occurs by radioactive decay follows first-order kinetics. The equation used to…

Q: Find the number of a-particles emitted in 1 second from 4 * 10-12 gram 210Po radioisotopes with a…

A: 669 number of a-particles emitted in 1 second.

Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced.…

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Q: Americium-241 (241Am) is a synthetic isotope used in smoke detectors. It undergoes alpha decay to…

A: Given: Half-life of isotope = 432.2 years. Initial mass of isotope = 0.30 µg And time passed = 70…

Q: What are the merits and limitations of precipitation methods? Give an example where the…

A: Those points which shows that a particular method is useful or help the mankind in any way are known…

Q: The half life of a specific radionuclide is 8 days. How much of an 80mg sample will be left after 24…

A: There are two methods to solve it : Method (1): The half life is the time in which any compound is…

Q: How old is this Martian Rock that is found to be containing 12.5% of a radioactive parent nucleus?…

A: On going from Martian Rock sample containing 100% of the Radioactive nucleus, to 25% of the…

Q: The isotope 261-Lr decays by a emission with a half-life of 2.7 min. How many minutes will it take…

A: As we know the Decay equation: λ=1tlnaoa a0= Initial concentration a= Concentration left after time…

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 23.8 days decay…

A: Since you have asked multiple questions we will solve only the 1st one for you. If you want an…

Q: A sample of wooden artifact is found to undergo 8 HC disintegrations per minute per gram of carbon.…

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

A: Suppose the initial amount of sample be Ao After 119 days, amount remaining, A = (1/21) Ao The…

Q: What are the merits and limitations of precipitation methods? Give an example where the…

A: Precipitation titration is a type of titration in which a precipitate is formed during the titration…

Q: The slope of a graph for some measurements of decay rate of a sample of 1281, a radionuclide often…

A: Radioactive decay obeys first-order kinetics.

Q: Carbon-14 (14C) is a naturally occurring radionuclide of carbon with about 5,730 years half-life. If…

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Q: The half-life of ZN-71 is 3.2 minutes. If one had 120.0g at the beginning, how many gram would be…

A: Half lives formula  used  2n=[A0]/At Where  n= Half lives