The half life of an isotope is 43 seconds.  How long does it take 100.00 g of that isotope to decay to 6.25 g?

Q: (11) Lead-211 is a radioactive isotope with a half-life of 36.1 minutes. How long will it take for…

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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: Beginning with 1.00 g of a sample of an unknown radioactive isotope, 0.05674 g of the isotope will…

A: The answer to the following question is-

Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

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Q: If the amount of a radioactive element decreases from 2.4 g to 0.30 g in 12 days, what is its…

A: Given: Initial amount of radioactive element, N∘=2.4gFinal amount of radioactive element, N =…

Q: [Refere A 1.14 g sample of a radioactive isotope decays to 0.87 g in 36.3 hr. What is the half-life…

A: Given  Initial Amount [ A ]0   = 1.15 gram  Remaining Amount [ A ]    = 0.87 gram  Time ( t ) = 36.3…

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

A: ★ Answer : 13.712 mg of Gallium-67 remains after 112 hours. ★ Solution :

Q: If uranium-238 has a half-life of 45 billion years, how many years would it take for a 10-gram…

A: Given  Half life of U-238 (t1/2)   = 45 billion years 1 billion years    = 109 years  45 billion…

Q: The half-life of a radioactive element is 1,250 years.What percent of the atoms remain after 5,000…

A: Number of half lives = 50001250 = 4 100%  →1250 years 50%  →1250 years 25% →1250 years 12.5 % →1250…

Q: Strontium-90 is radioactive and has a half life of 28.8 years. What percentage of a sample would be…

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Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

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Q: 187 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Given datas –  t1/2 = 30.2 years  t = ?  [A0] = 100.0 g  [At] = 1.20 g

Q: The half life of an isotope is 43 seconds.how long does it take 100.00 g of isotope to decay to 6.25…

A: Given data contains, Half-life of an isotope is 43 seconds. Mass of isotope before decay is 100.0 g.…

Q: Gallium-67 is used medically in tumor- seeking agents. The half-life of gallium- 67 is 78.2 hours.…

A:

Q: The half-life of 129I is 1.72 x 107 years. Consider a sample that contains 2.39 x 106 atoms of this…

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Q: The isotope Bismuth-212 has a half life of 368.65 day. What mass in mg of a 2 mg sample will remain…

A: Half life of Bismuth, t1/2 = 368.65 days. Bismuth-212 is a radioactive element. Thus, it will follow…

Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Data given,  Half-life period of 137Cs, t1/2 = 30.2 years Initial amount, No = 100.0 g Amount left,…

Q: Radioactive nuclide, 90Sr, has a half-life of 30 years. What percent of a sample of 90Sr will remain…

A: Half life = 30 years  Time given = 60 years

Q: Cs-134 has a half-life of 2.0 years. How much of a 2.50-g sample of this isotope will remain after…

A: Given :- half life of Cs-134 = 2.0 years                Initial amount of sample = 2.50-g  To…

Q: Potassium 40 has a half life of 1.3 billion years.  If no half lives had passed, what percentage of…

A: A numerical problem based on half life period, which is to be accomplished.

Q: The half life of an isotope is 43 seconds. How long does it take 100.0g of that isotope to decay to…

A: Half life = 43 second k = 0.693half life= 0.69343 sec=0.016 s-1

Q: 7. If uranium-238 has a half-life of 45 billion years, how many years would it take for a 10-gram…

A: The half-life is the time required to reduce one half of the initial concentration of the substance.

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

A:

Q: A radioactive substance has a ​half-life of 437 years. What is its decay​ rate?

A: Radioactive Decay: Radioactive decay is the property of the several naturally occurring elements as…

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

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Q: Radium-226 is radioactive and has a half life of 1600. years. How long would it take a sample to…

A: The emission of energy in the form of the ionizing radiation is called radio decay.This radiation…

Q: The number of a certain radioactive nuclide present in a sample decays from 59,122 to 429 in 9.23…

A: Given: No=59122Nt=429t=9.23 days Half life of the radioactive species refers to the time required to…

Q: 2. The isotope cesium-137 has a half-life of 29.75 years. How long will it take a 100 gram sample of…

A: First-order reaction: The type of reaction which depends only on one substance is called a…

Q: The half-life of a radioactive isotope is 12.8 seconds. Starting with 0.960 g of this isotope, how…

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Q: 214Bi is a radioactive isotope of the element bismuth with a half-life of 19.7 minutes. What…

A: Welcome to bartleby !  Introduction :  We have to calculate percentage of bismuth lost . Given :…

Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9…

A: Decay reactions are first order reactions. Since we know that, for different order of reactions, the…

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: Given Half life of Radon -222 ( t1/2 )  = 3.82 days  Initial amount of isotope ( A0 )= 33.5 mg  Time…

Q: Chemistry An unknown radioactive substance has a half-life of 3.20 hourshours . If 34.7 gg of the…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

Q: If the amount of radioactive element decreases from 2.4 g to 0.30 g in 36 days, what is its…

A: Half life is defined as the time taken by the radioactive sample to decay to half its original…

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

A: Gallium - 67 has a half-life of 78.2 hours. Initially 36.7 mg of Gallium - 67 were present.   Here,…

Q: 187 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Half life means time takwen by the sample to reachhalf of its concentartion.  Remains afetr t time =…

Q: The isotope cesium-137 has a half-life of 29.75 years. How long will it take a 100 gram sample of…

A: Radioactive decay reactions are first order reactions. The calculation can be done using first order…

Q: 239Pu is a nuclear waste byproduct with a half-life of 24,000 y. What fraction of the 239Pu present…

A: Given data, t1/2 of P239u = 24,000 yTime (t) = 1000 years To calculate the fraction of the 239Pu…

Q: Plutonium-239 has a half life of 2.41x10* yr. If you have a 10.0 mg sample how much will remain…

A: The time where any substance/element gets remained just half of its actual quantity is considered as…

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

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

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: The half life of radon = 3.82 days. Initial amount = 37.9 mg  time = 4.70 days mass remains after…

Q: lement X decays radioactively with a half life of 8 minutes. If there are 530 grams of lement X, how…

A: Given: The half life of the sample, (t1/2)=8 minutes. The initial amount of sample, (N0)=530 grams.…

Q: Cs – 137 has a half life of 30.2 years. How many years will it take for a 100.0 g sample to decay to…

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Q: A radioactive isotope has a half-life of 60.2 days. What fraction of the isotope remains after 418…

A: Provided half life(t1/2) = 60.2 days Provided time(t)=418 days Let initial amount= [A•] Let final…

Q: The 175Pt isotope has a half-life of 2.53 seconds. What percentage of the original quantity of 175Pt…

A: The radio active decay follows first order kinetics. The half life t1/2 and rate constant K of a…

Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium- 201 is 72.9…

A:

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.