The half-life of 90Sr is 28 years. How long will it take for a given sample of to be 73% decomposed?   9.0 half-lives   13 years   1.3 years   53 years   None of these choices are correct

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: The law of radioactive disintegration of a radioactive substance states that the rate of…

A: The initial amount of Sr90 that stored in a sealed container in 1962 is; t12=1987-1962=25…

Q: The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 10" years. Suppose…

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Q: How many days will it take to reduce the original amount of 222Rn to 1/128th its original size?…

A: Since the decay reactions are first order reactions Hence we can say two things about them  1) Half…

Q: Use the References to access important values if needed for this question. The radioisotope…

A: The half period is -   t1/2 = 0.693/K Here - t1/2 = half life period of P -32 = 14.3 days K = rate…

Q: The half-life of is 28 years. How long will it take for a given sample of to be 84% decomposed?   a.…

A: Given data is as follows: The half-life t12=28 years The sample decomposed = 84 % Let the initial…

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

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Q: The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 × 10⁹ years. 9 Suppose…

A: we need to calculate the age of the rock

Q: The half-life of Po-216 is 0.16 s. How long would it take to reduce a sample of it to the negligible…

A: The decay reactions are first order reactions. Since we know that the relationship between the…

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Q: The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 × 10’ years. Suppose…

A: Given : Half life of potassium-40 = 1.26 X 109 years. Moles of argon-40 = 0.543 mmol. And moles of…

Q: Given a solution containing 0.010 M CaCl2 and O.020 M MgCl2, what is the activity of Ca2+? O 0.0034…

A: Given: Concentration of CaCl2 = 0.010 M And concentration of MgCl2 = 0.020 M

Q: The half-life of the radioactive isotope radon-222 is 3.82 days. How long will it take for the mass…

A: Recall the following expression to calculate required time of radon-222 to decay from 93.2…

Q: By mass spectral analysis, a sample of strontium is known to contain 2.64x1010 atoms of Sr-90 as the…

A: Answer to all the questions is given below.

Q: The half-life for gallium-67, a radioisotope, is 78.25 hours. How much of a 56.7 sample of…

A: Given datas ;  t1/2 = 78.25 hrs. [A]0 = 56.7 mg  [A]t = ?  t = 359 hrs.  t/t1/2   = 359 hrs / 78.25…

Q: The half-life of is 0.220 years. How much of a 500.0 mg samnple remains after 24 hours? A. 496 mg B.…

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Q: Phosphours-32 is a commonly used radioactive nuclide in bichemical research, particularly in sutdies…

A: Mass of P-32 present in 175 mg of  Na332PO4 Molar mass of  Na332PO4 = 164 g/mol  164 g  Na332PO4…

Q: Iodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: We have to predict the amount of iodine left

Q: If 25.35 grams of radioactive waste reduces to 9.75 grams of radioactive waste after 1350 years,…

A: Given, time = 1350 years  Half life , t1/2 = ?

Q: Consider the radioisotope "Ca (half life = 1.03 × 105 years). What is the first order rate constant…

A: Rate constant is 6.73 x 10-6 yr-1

Q: A radioactive substance undergoes decay as follows:  Time (days) Mass (g) 0 500 1 389 2 303 3 236 4…

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Q: The half-life of the radioactive isotope polonium-214 is 1.64x104 seconds. How long will it take for…

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Q: The natural abundance of 14C in the earth's atmosphere and all living organisms is approximately…

A: Half-life is the time taken for the reactant to reduce the amount of the isotope to half its initial…

Q: half-life

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Q: What is the half-life of N2O5 at 70∘C?

A: For first order reaction, t1/2 = 0.693/k where t1/2 = half life of the reaction k = rate constant…

Q: An isotope of thorium, 227Th, has a half-life of 18.4 days. How long will it take for 83% of the…

A: The correct answer of the question is given below

Q: lodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Chemical kinetics is the study of the reaction that how fast or slow a reaction is taking place. The…

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

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Q: The half life for the radioactive decay of carbon-14 to nitrogen-14 is 5.73 × 10³ Suppose nuclear…

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Q: If the amount of radioactive sodium 24, used for studies of electrolytes within the body, the sample…

A: Given data: Radio active sodium -24 used in the studies of electrolytes within the body. Initial…

Q: 1. If gallium – 68 has a half-life of 68.3 minutes, how much of a 160.0 mg sample is left after 1…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: The half-life of technetium-99 is 6.0 hours. How much of a 50.0 mg sample will remain after 24…

A: Given,  Half-life period of technetium-99 = t1/2 = 6.0 hours  Initial concentration = N0 = 50.0 mg…

Q: half-life of a radioactive substance is 10 days and there are 10 grams initially. What is the…

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Q: The half life for the radioactive decay of carbon-14 to nitrogen-14 is 5.73x 10^3 years. Suppose…

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Q: Iron‑59 is used to study iron metabolism in the spleen. Its half‑life is 44 days.44 days. How many…

A: The time will take a 28.0 g28.0 g sample of iron‑59 to decay to 1.75 g has to be calculated

Q: lodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Sample mass of Iodine - 131 initially = 0.16 gram Half life of iodine-131 = 8 days We know that…

Q: The half-life of strontium-90 is 28 years. Suppose we have a 80 mg sample. (a) Find a function that…

A: Decay reaction of radioactive element is of first order. And for first order reaction, rate of the…

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

A: calculation of age of the rock half life of C-14 is given Amount of N-14 and C-14 is given

Q: 3H decays to ^3He (Helium) with a half life of 12.32 years. If you start off with 1,000,000 atoms of…

A: In a first-order reaction, the reaction rate is directly proportional to the concentration of one of…

Q: The half-life of radioactive cobalt is 5.27 years. Suppose that a nuclear accident has left the…

A: Given the half-life of cobalt=5.27 years.

Q: Use the References to access important values if needed for this question. The half-life of the…

A: Introduction: Radioactive isotopes can be defined as atoms that contains an unstable combination of…

Q: Iodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Nuclear chemistry is a branch of chemistry which involved the study of reactions in the nucleus. The…

Q: 47. If 25 mg of an initially 200. mg sample of bromine-74 is still active after 75 minutes, the…

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Q: The radioisotope sodium-24 is used to determine the levels of electrolytes in the body. A 16microg…

A: The term half life can be defined as the time taken by a given quantity to reduce to half of the…

Q: The half life for the isotope C11 is 20.38 minutes. How long will it take for 70% of a sample to…

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Q: Sodium-24 has a half-life of 15.0 hours. Suppose you had a sample containing 0.010 moles of Na-24.…

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Q: The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 × 10° years. Suppose…

A: Given: The half-life for the radioactive decay of potassium-40 to argon-40 = 1.26×109 years The rock…

Q: 47.  Recently, the skeleton of King Richard III was found under a parking lot in England. If tissue…

A: Radioactive decay follows the first order kinetics. The rate equation for the first order reaction…

Q: Strontium−90 is one of the products of the fission of uranium−235. This strontium isotope is…

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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.