If 25.35 grams of radioactive waste reduces to 9.75 grams of radioactive waste after 1350 years, then what is the half-life for this radioactive element

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: Bandages can be sterilized by exposure to gamma radiation from cobalt-60, which has ahalf-life of…

A: Given: The mass of the sample is 5.27 Y. The half-life of cobalt-60 is 5.27 y.

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: Element X has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10…

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Q: Substance D initially weights 56 grams. After 6 minutes, it was observed that its mass decreased by…

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Q: 7) The half life of silicon is 710 years. 40 grams are present now, how much will be present in 200…

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Q: The half-life of element X is 500 years. If there are initially 8 g of X, how much will remain after…

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Q: [Review Toplcs] [References) Use the References to access important values if needed for this…

A: Carbon Dating of a Sample  using the data from question and solution is present in step-2

Q: A 1.50 x 10-6 M solution of Khal Drogo’s potion was prepared by Daenerys in 1948 to make him…

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Q: A particular isòtope of an element has a half-life of 75.0 hours. What percentage of the sample will…

A: All isotopic decomposition follows the first order reaction kinetics. So using integrated rate…

Q: What is the half-life of the bizarre isotope Toddium - 419 (it is a makeup element) if after 4.00…

A: Time period, t = 4.00 weeks Initial amount, [A]o =950.0 g Final amount, [A] = 29.6875 g Calculation…

Q: The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is…

A: Amount of rubidium = 123.0  μg  Amount of strontium = 5.5 μg Half life time of rubidium = 4.8 × 1010…

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: Element X has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10…

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Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

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Q: In living organisms, C-14 atoms disintegrate at a rate of 15.3 atoms per minute per gram of carbon.…

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Q: 15) A sample of radioactive material contains 1030 atoms. If the half-life is 6hours, then, the…

A: Radioactive decay is the decay in which an unstable nucleus is broken into a number of smaller…

Q: Another form of radiometric dating is potassium-argon dating, which tracks the ratio of Ar-40 to…

A: Any reaction following "first-order reaction", that reactions rate always relies over single…

Q: (19] There are 40 grams of radioactive substance at one point in time. After two hours, only 30…

A: The half-life of a quantity is the amount of time it takes to decrease to half of its original…

Q: Living things absorb carbon-14 (C-14) throughout their lives, and then stop absorbing C-14 when they…

A: Half life = 5730 years This follow first order kinetics so first we will Calculate rate constant

Q: A to 240mg sample of technetium 99M is used for a diagnostic test. if Technetium -99m has a…

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

A: Given : Initial amount of strontium isotope = 1.00 g Final amount of strontium isotope = 0.200 g And…

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

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Q: Carbon 14 decays to carbon12. The half-life of the C14 isotope is 5730 years. 3000 years after an…

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Q: What

A: We will use relation between t1/2 and mass

Q: An old wooden bowl unearthed in an archeological dig is found to have one‑fourth of the amount of…

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Q: An analytical laboratory balance typically measures mass to the nearest 0.1 mg. What energy change…

A: Given : Loss of mass = 0.1 mg  Since 1 Kg = 1000 g  And 1 g = 1000 mg => 1 Kg = 106 mg Hence mass…

Q: Nuclear fusion power stations will produce radioactive waste. This waste will have a much shorter…

A: Nuclear fission is the breaking down of heavy, unstable nuclei into two or more lighter nuclei while…

Q: Define the term half-life as used in radioactivity. The half-life of carbon-14 is 5730 years. If the…

A: Half life in Radioactivity : It is the time required by a radioactive nuclei to decay to exactly…

Q: In living organisms, C-14 atoms disintegrate at a rate of 15.3 atoms per minute per gram of carbon.…

A: Answer is explained below. Given that, in living organisms C-14 atoms disintigrate at a rate of 15.3…

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

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Q: alf-life of a radioactive substance is 3.8 hrs. After how many hours 30% of its original value…

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Q: An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 482 g…

A: Nuclear decay follows 1st order reaction.  Given the half-life of C-14, t1/2 = 5730 year…

Q: Carbon-11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes. What fraction of the…

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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: The half-life of tritium is 12.4 years. How long will it take for 15% of a sample of tritium to…

A: The radioactive decays are first order reaction.

Q: The half-life of 90Sr is 29 years. What fraction of the atoms in a sample of 90Sr would remain 175…

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Q: What is the half-life of Californium- 252 based on the graph below?

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Q: he​ half-life of the radioactive element unobtanium-37 is 5 seconds. If 32 grams of unobtanium-37…

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Q: Some watch dials are coated with a phosphor, like ZnS, and a polymer in which some of the 1 H atoms…

A: Given, The half-life of the tritium is t1/2=12.3 yr. Time t is 50 yr. The rate constant can be…

Q: The half life of Pa-234 is 6.75 hours. What fraction of a sample of this isotope remains after 27…

A: The half-life period of radioactive elements can be expressed as: λ=0.693t1/2

Q: An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 484 g…

A: Nuclear decay follows 1st order reaction.  Given the half-life of C-14, t1/2 = 5730 year…

Q: n unknown radioactive element decays into non-radioactive substances. In 440440 days the…

A: a) Given :-  Given that, in 440 days the radioactivity of a sample decreases by 37 percent.  i.e.…

Q: Element X is radioactive and transforms into element Y. The half-life of X is 12 hours. How much Y…

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Q: The half-life of 90Sr is 28 years. How long will it take for a given sample of to be 73% decomposed?…

A: Given, Half life of 90Sr (t1/2)  = 28 years Time required for a decomposition of 73% of the given…

Q: Americium-241 is widely used in smoke detectors. The radiation released by this element ionizes…

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Q: It takes 6400 years for one gram of a radioactive element to decay away to only 1/16 of a gram. The…

A: Given time = 6400 years M/M० = 1/16

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.