Chemistry If you have an 88 gram sample of radioactive material decaying and the half life is 12 minutes. How much material remains after 36 minutes? A. Og В. 44g С. 11g D. 5.5g E. 22g

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 radioactive decay of a sample containing an unknown radioactive isotope produced 6274…

A: Given Initial disintegration = 6274 Final disintegration = 1898 Time = 15.31 days

Q: If 1 g of an isotope has a half life of 15 hr, the half life of 0.5 g sample is A. 15 hr B. 30 hr C.…

A: 1 g sample of an isotope has a half - life = 15 hr 0.5 g sample of an isotope has a half - life =?…

Q: If you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9% of the…

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

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Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137…

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Q: 19. The half-life of carbon-14 is 5730 years. A plant fell into a tar pit 18,400 years ago before…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 4.60 mg to 1.90 mg…

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Q: The first-order decay of radon has a half-life of 3.823 days.  How many grams of radon remain after…

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Q: U-238 decays with the half-life of 4.47 billion years. Calculate the % of a sample left after 13.4B…

A: Given : Half life = 4.47 billion years  Time = 13.4 billion years.

Q: The number of radioactive nuclides in a sample decays from 3.80 x to 1020 19 9.50 x 10 in 58.0…

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Q: 120 mg sample of technium 99m is used for a diagnostic test. if a technium 99m has a half-life of…

A: Given- Initial mass = 120 mg Half life = 6.0 hrs To find- milligrams of the technetium 99M sample…

Q: Na-24 is a radioactive isotope that has a half-life of 15 hours. What percent of the original sample…

A: Radioactive decay follows first order kinetics.  k = 0.693/t0.5 ....(1)  Here, t0.5 = 15 hours…

Q: One of the nuclides in spent nuclear fuel is UU-235, an alpha emitter with a half-life of 703…

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Q: 5. Carbon-11, used in medical imaging, has a half-life of 20.4 min. The carbon-11 nuclides are…

A: Answer: Relation between quantity of radioactive substance and n number of half lives is shown…

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

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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: 8. What mass of plutonium-240 will remain after 32,820 years if the initial sample contained 4.8 g…

A: No. of half lives = Total time/ half- lives n = 32820/6564 = 5 n = 5

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: The half-life of Ga-67 is 77.9 hours. How long will it take Ga-67 to decay and lose 95% of its…

A: Radioactive decay follows first order kinetics. k = 0.693/t0.5 = 0.693/77.9 hour^-1 = 0.008896…

Q: -) The half-life of lodine-131 is 8.0252 days and the decay is first order. If 14.4 grams of 1-131…

A: Half life of iodine-131 (t1/2) = 8.0252 daysInitial amount of I-131 = [I-131]0 = 14.4 gamount of…

Q: 31. Uranlum 235 decays to Lead 207 with a half-life of 0.7 billion years. What Is age of a rock…

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

A: Half life of technetium - 99 is = 6 hours.  Let Take a sample of technetium - 99 having number of…

Q: 32.  A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What…

A: Given : Half life = 5700 years

Q: If you have a sample of radioactive material that weighs 2 grams, and only 1 gram is left that is…

A: Initial nuclei = 2 grams. Reduced nuclei = 1 grams. Time = 5 years. Half life time of material = ?

Q: 1.) Carbon-14 has a half-life of 5600 years. If you had a sample of 100% carbon-14, how much would…

A: Given, carbon-14 half life with 100 % carbon-14 sample.we are asked to calculate the amount of…

Q: You are studying a sample of granite that is about 2.1 billion years old. You know it contains some…

A: Here granite containing uranium -235 is formed 2.1 billion years old. We have to determine the…

Q: If you are given a sample of 14 g of a radioactive substance and waited for 4 half-lives to pass,…

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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: Hydrogen-3 has a half-life of 12.3 years. How many years will it take for 890.0 mg 'H to decay to…

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

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Q: If there are 52 milligrams left from a 0.26-gram sample of a radioactive substance after 46 hours,…

A: In this question, we have to calculate the half life If there are 52 milligrams left from a…

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: 3 C2H2 C6H6 at 25 C Calculate the Kp AG° CH6 189.7 KJ/mol C2H2 209.2 KJ/mol

A: From the given data first we have to calculate the ∆G°rxn for the overall reaction . ∆G°rxn =…

Q: If it takes 60 days for 100 mgmg of a particular radioactive isotope to decay to 3.13 mgmg what is…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: Phosphorus-32 is a radioactive isotope used as a tracer in the liver. How much phosphorus-32 was…

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Q: Suppose 62.0% of a sample of radioactive polonium-218 remains after 2.14 minutes.  Estimate the…

A: The half life of Po-218 has to be determined. Given data contains, Time taken is 2.14 minutes.…

Q: that reads 452 g. How much sample is left after half an hour? 5.00 g 90.4 g 14.1 g 75.3 g

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Q: The half life for the decay of carbon-14 is 5.73 x 10³ years. Suppose the activity due to the…

A: We need to calculate age of the wood sample

Q: Fluorine-18 decays to form a positron and oxygen-18. After 90.0 minutes, 1.00 18O is present…

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Q: The half-lives of all the isotopes in the uranium decay series are short when compared to…

A: Answer:The numbers mentioned before the chemical species in a balanced chemical equation is called…

Q: Carbon-14 has a radioactive half-life of about 6,000 years. If an organism has 10 g of carbon-14 in…

A: Provided half life (t1/2)=6000year Also, provided time(t)=6000year Initial amount (A•)=10g 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.