Radioactive substances ecay exsponetially. half - life is a conveinent way to describe the rate at which substances break down - its the time it takes for exactly half the subsatnce to decay. suppose a scientist with 100 grams of a substance with a half-life of 60 years. develope a function describing the amount A the substance reamining after n half-lives, and use it to determine how much of the substance will remain 200 years

Q: atom 16. Phosphorus- 32 has a half-life of 14.3 days and is used in the treatment of 32/16 leukemia,…

A: Beta particle decay:                               A Beta particle is a high energy electron that…

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…

A: The redioactive decay always follows first order reaction kinetics.

Q: Technetium-99 is a commonly used radioisotope decays via Beta-emission. a. Use a graphical method on…

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Q: The three isotopes of hydrogen are commonly called hydrogen ('H), deuterium (*H), and tritium ('H).…

A: Hello. There are multiple subparts in the question. The first three subparts have been solved. To…

Q: Please use the välues ih ne textboOK values. 120 120 A 1.00x10-6 g sample of cesium-120, "55 Cs, has…

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Q: Iodine-131 is used in the diagnosis and treatment of thy- roid disease and has a half-life of 8.1…

A: Given data: The half-life of iodine-131 = 8.1 days The initial amount of the sample= 10 μg

Q: The half-life of Lithium-8 (Li-8) is 0.84 seconds. If 400 grams of Li-8 were released to the…

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Q: The hait tde of a certhin isotope is 448 years. Calculate the time (in years. yi required for 152…

A: Given,  Initial amount of an isotope = 152 g.  Amount of isotope remaining 't' time = 0.633 g.  Half…

Q: The % abundance of a radioactive isotope of element X is 0.0234%. This isotope is decaying at a rate…

A: The rate of disintegration is 15 disintegrations per sec. This implies that 15 atoms of the…

Q: After 4.00 years, 2,000g of a radioisotopes remains from a sample that had and original mass of…

A: There is some mistake in 1st part  If the left amount is 2.0g then half-life is itself 4 years

Q: Please solve the following problem!A huge amount of radioactive iodine (131I) andcaesium(137Cs) was…

A: Please find the attached images.

Q: The 14C in a bone has a disintegration rate of 4000 dis h1. The half life of 14C is 5730 years.…

A: The rate of disintegration is proportional to the number of atoms left after a time (N) as- Where…

Q: ome Tools Section 5.5 Exercis... x Section 5.5 Proble.. Section 5.5 Proble... CRA 6 / 15 +) 106% 6.…

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Q: what percentage of the strontium-90 that was made 1945 still exsist now in the year 2021? the…

A: Given , Strontium -90  half life t1/2=28.9 initial concentration (concentration in 1945) = CA0 final…

Q: 6. Iodine – 131 is used in the form of sodium iodide to treat cancer of the thyroid. The isotope has…

A: half - life = t1/2 = ln 2λ Given that,t1/2 = 8.04 days Ao = 25 mg t = 32.2 days

Q: The half-life of cobalt is 5.3 years. How much of a 1.000- mg sample of cobalt-60 is left after 15.9…

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

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Q: According to current regulations, the maximum permissibledose of strontium-90 in the body of an…

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Q: A wooden artifact from a Chinese temple has a 14C activityof 38.0 counts per minute as compared with…

A: Given, The activity of carbon of the wooden artifact from a chinese temple is Nt = 38.0 counts per…

Q: Question 1:  If the reaction is zeroth order or second order, you can not calculate the half life.…

A: We need to explain why if the reaction is zeroth order or second order, we can not calculate the…

Q: 14. What are control rods in a nuclear reactor? they control the intensity of the chain reaction…

A: Answer: Control rods in the nuclear reactor are generally made of cadmium or Boron.

Q: Carbon-14 decays eith a half-life of about 6,000 years. If you find a fossil in which 3% of the…

A: This Carbon-14 decay is first order reaction Decay constant (k) = 0.693 / half life = 0.693 / 6000 =…

Q: An ancient skull has a carbon-14 decay rate of 0.85 disintegrationsper minute per gram of carbon…

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Q: The radioactive isotope 8P decays by positron emission. If the mass of a sample of phosphorus-28…

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Q: The half life of a radioactive iodine is 8 days. How long will it take for 0.25 g of radioactive…

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

A: This problem is based on nuclear chemistry. This is a first order reaction. We have to use the…

Q: The radioactive isotope I decays by electron capture. If the mass of a sample of iodine-123 decays…

A: Interpretation -  To determine the half life of iodine-123 when mass of sample of iodine-123 decay…

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Q: Q1: If you know that the half-life of a radioactive element is equal to 20 days, find the following:…

A: Radioactive active decay generally follows a first order reaction and therefore, the rate of…

Q: Bromine-82 has a half life of 35.7 hours. How many milligrams of Br-82 will remain if 2.30g of Br-82…

A: This question is related to radioactivity. Bromine has two isotopes Br-79 and Br-82. Out of these…

Q: A freshly isolated sample of 90Y was found to have an activity of 9.8 x 105 disintegrations per…

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Q: If-Life The half-life of plutonium-239 is 24 110 years. Of an original mass of 100.g, how much…

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Q: Sodium-24, with a half-life of 15 hours, is commonly used to locate leaks in industrial pipe lines.…

A: Sodium-24 is one of the isotope of sodium and  sodium-22, sodium-24 are radioactive isoptopes,…

Q: 6. Iridium is a radioactive elementused fortherapy in nucle armedicine. It decaysto% or 24, of its…

A: Answer: Nuclear reactions are first order reactions, therefore decay reaction of Ir will also be a…

Q: Potassium-40 decays to argon-40 with a half-life of1.27x109 yr. What is the age of a rock in which…

A: Half-life: It is defined as the time required for a quantity to reduce half of its initial value.…

Q: 11. Cesium-137 has a half-life of 30 years. What percent of the radioactive cesium parent atoms will…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: 3.) The Radioactive nuclide co has a half-Life of 8.5 hours, 55 27 what mass of Co Temains from a.…

A: Mass of sample remains after 18 hours is       0.0045 g.

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.