time for amount of initial radioactivity radionuclide to decrease to 1/16 of initial amount

Q: Iodine-131 has a half life of 8.0 days determine how many days must elapse for a 0.80 mg sample of…

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Q: A sample of 113mIn has a half-life of 100. minutes. What amount of 113mIn remains (in CPM) if a…

A: Like chemical reactions, nuclear reactions are type of chemical reaction only but here in place of…

Q: if the passing of five half -life leaves 50.0g of a of radioisotope sample, how much was present in…

A: Mass of sample after 5 half life = 50 g Initial amount = ?

Q: Determine the half-life of a radionuclide if after 18 days the fraction of undecayed nuclides…

A: Half-life (t1/2) represents the amount of time at which the concentration of the radioactive nuclide…

Q: Fe has a mass defect of 0.58872 amu. What is its binding energy per nucleon?

A: Given:   Mass defect of Fe is 0.58872 amu.

Q: Nickel-56 decays with a half-life of 6.075 days. After 5.69 hours, a radioactive nuclide has passed…

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Q: Calculate the half-life of a radioisotope if it takes 72 years for a sample to decay to 12.5% of its…

A: 100 % to 50 % one t1/2. 50 % to 25 %  second t1/2. 25% to 12.5 third t1/2. three t1/2 = 72 years.…

Q: Magnesium-27 is an unstable radioisotope. For it to become stable, it has to undergo

A: Mg has 27 mass no. and 12 atomic number. Hence, it has 12 protons and 27-12 = 15 no. of neutrons.…

Q: A sample of copper-64 gives a reading of 83 counts per second on a radiation counter. After 9.1 h,…

A: Answer : We can use first order kinetics to calculate half life of the reaction . Initial count and…

Q: Time (days) If the initial sample is 6.50 g, what mass of the original iridium-192 remains after 150…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: radionuclide time for amount of initial radioactivity radionuclide to decrease to 1/8 of initial…

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Q: A patient undergoing thyroid radiotracing was initially administered with 50.0 mg of iodine-131.…

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Q: A wooden artifact is found in an ancient tomb. Its carbon-14   activity is measured to be 61.0% of…

A: Activity of carbon-14 = 0.61 R/Ro = 0.61 We will use the below equation for decay process- R=…

Q: Calculate the mass defect and binding energy for 13C atom.

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Q: The following are factors that influence the penetration activity of radiation through a barrier…

A: Following factors influence the penetrating power of a particle.  i.e. the penetrating activity of…

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: A sample of Carbon is observed to have 15g left after an estimated time of 10000years. Determine the…

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Q: The half-life of Po-214 is 0.001 seconds. How much of a 10 gram sample is left after 0.003 seconds?

A: Half life of Polonium, t1/2 = 0.001 second Mass of sample = 10 g

Q: If 7.0 grams of a sample decays to 0.44 grams in 2.0 hours, what is the half-life time of the…

A: For calculation of half life first of all we need rate constant of the reaction, which can be…

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 31.3 days decay…

A: Given, Half life = 31.3 days  Time , t = ?

Q: Calculate the half-life of a radioisotope if it takes 144 years for a sample to decay to 12.5% of…

A: N = 0.125 No N/No = 0.125

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: The amount of a radioisotope that remains after two half-lives have passed is:

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Q: Define Radiotracers?

A: Radiotracers also called as radiolabel compound which are use as a path tracers of reaction , drug…

Q: A radioactive material has mean lives of 162Q year and 520 year for a and Bemission respectively.…

A: Answer to 33 Given, Mean life for α, T1 = 1620 yearMean life for β, T2 = 520 yearNNo = 14 To find-…

Q: Is Radiometric dating based on the decay of radioactive isotopes over time?

A: Radiometric dating is used by geologists to find the age of old samples like trees, rocks. It is…

Q: The time it takes for half of a radioisotope's atoms to decay (like Carbon-14) ___.   is used to…

A: Half life is the time required by a quantity or a substance to reduce to half of its initial value.…

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: 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: Radionuclide A has a half-life that is one-half that of radionuclide B. The decay rate constant of A…

A: The first order kinetics is followed by the radioactive decay reactions. The general formula of the…

Q: find mass defect and the binding energy

A: We have given that  actual mass of a 141Pr atom is 140.907648 amu.    (a) Calculate the mass defect…

Q: Nuclides with too many neutrons to be in the band of stability are most likely to decay by what…

A: Nuclides with too many neutrons lie above in the band of stability. This nuclie which has more…

Q: 50) Platinum-194(194Pt) decays to Osmium-190 What particle is emmitted.

A: Chemical symbol of osmium is Os.

Q: A vial of radioactive material is found at a site where it was left unattended. At the time the vial…

A: Given : Initial mass of reactant = 10 g And mass of reactant after 4 days = 8 g

Q: A 50.0 mg sample of an unknown radioactive substance was placed in storage and its mass measured…

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Q: . If the half-life of a radioisotope is 3

A: Half life (t1/2 or t50%) :  The time required to consume half of the initial reactant is called "…

Q: A 50.0g sample of nitrogen-16 takes 14.4 second to decay to a mass of 12.5G. Calculate the half life…

A: Given: The time taken by N-16 to undergo decay, t = 14.4 sec The initial amount of N-16, No = 50.0 g…

Q: It is well known that any radiocarbon takes several decades to disintegrate. In an experiment, only…

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Q: If we assume that the initial activity of the progeny is zero, derive the time at which N2 is a What…

A: The given serial radioactive decay expression is of successive radioisotope decay system. These can…

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: The radioactive nuclide has a shelf-life of 17.5 hours. What mass remains from 0.0100g sample after…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: First order the samples by decreasing initial video activity then calculate how long it will take…

A: Calculation for time to decrease by 1/8 of initial amount of sample A:

Q: A medical technician is working with the four samples of radionuclides listed in the table below.…

A: we need to fill the given table

Q: A 25-g sample of a pure radioisotope decayed until approximately 1 gram remains. If it took 245 days…

A: Given, A 25-g sample of a pure radioisotope decayed until approximately 1 gram remains. If it took…

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…

Q: A freshly prepared sample of radioactive nuclide undergoes 3312 disintegrations per second. After…

A: The radioactive reaction is first order reaction hence, it will follow first order of kinetics as-…

Q: The cesium-137 has a half life of 30 years after 90 years about 10g.remains. the original mass of…

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Q: A certain artifact is tested by carbon dating and found to contain 73% of its original carbon-14. As…

A: Given : Concentration of carbon present = 73 % of initial concentration  And concentration of radium…

Q: Predict the mode of decay begin 65^ Ni undergoes.

A: The heavier isotopes having mass number more then 200 under go alpha decay. Light isotopes( mass…

Q: Differentiate a transmutation from a decay.

A: given Differentiate a transmutation from a decay.