The cesium-137 nuclide has a half-life of 30 years. After 90 years, about 10 g remains. The original mass of the cesium-137 is closest to Group of answer choices 70 g 60 g 100 g 90 g 80 g

Q: Carbon-14 Original amount: 60.0 g Amount left: 3.75 g Total time: Half-life: 5730 y Number of…

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Q: The first transmutation of an element was performed in 1919 by Ernest Rutherford when he bombarded…

A: Interpretation -  To tell about what is other nuclide when first transmutation of an element was…

Q: 32p has a half-life of 14.3 days. The original sample of 32P has a mass of 1.88 g. Approximately…

A: Answer: 0.0294 g

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: Hi, please help with this questions attached. Especially 1b, and number 2 and 3 thank you, Janet.

A: Hey, since there are multiple questions posted, we will answer first question (1b). If you want any…

Q: A 56 mgmg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

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Q: Aluminum-29 decays to a silicon-29 nuclide

A: The radioactive decay process is a spontaneous process. It occurs according to the first-order…

Q: 7) Aluminum-29 decays to a silicon-29 nuclide with a half-life of 6.56 minutes. What percent of an…

A: Given -  Half life=6.56minutes Time=18minutes

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: 1 A radioisotope has a half life of 4 days. How much of a 20-gram sample of this radioisotope…

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Q: Nuclide X has a higher rate of decay than nuclide Y.  Based on this information, which of the…

A: B) Nuclide Y has a larger half-life than nuclide X. C). Nuclide X is less abundant than nuclide  Y.…

Q: A rock constains Pb-206 to U-238 mass ratio of 0.245: 1.00. Assuming the rock did not contain any…

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Q: Q5. The chart shows the mass of a decaying nuclide versus time. What is the half-life of the decay?…

A: The decay constant (k) can be determined by the following equation; k=-1tlnNN0 Here, N is the amount…

Q: life of 1.27 × 109 yr. The age of a mineral sample that has a mass ratio of 40Ar to 40K of 0.330 is…

A: The answer is given as follows

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

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Q: A piece of wood, reportedly from King Tut's tomb, was burned, and 7.32 g CO2 was collected. The…

A: In order to find the age of the sample we first write down the given data: Mass of CO2=7.32 g. Total…

Q: Complete the following nuclear fission reaction. *U+}n→3;n +3e + Te + 235 e 189 -1 92

A: Concept  Atomic mass of reactant = Atomic mass of product  Atomic no. Of reactant = Atomic no. Of…

Q: a 45.91 mg sample of a pure radioisotope has a half-life of 52 days, what will be the mass of the…

A: Given 45.91 mg sample of a pure radioisotope has a half-life of 52 day mass of the original…

Q: rock contains 0.398 g of Pb-206 to every 1.00 g of U-238. Determine the age of this rock assuming…

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Q: the Cs-131 by life has a half life of 30 years. after 120 years, 2.6 g remain. what is the original…

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Q: 60Co has a half-life of 5.27 yr. What percentage of its original activity will a sample of 60Co have…

A: Dear student,I am providing solution for Q.1 that you have asked as we are entitled to do one…

Q: An archeological sample was predicted to be 9,415 years old. If the C-14 measured at present in the…

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Q: Which of the following correctly balances this nuclear fission reaction? 1n + 235U = 131I _ +3 0 n…

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Q: The iodine-131 nuclide has a half-life of 8.0 days. If you originally have a sample containing 728-g…

A: Known: Half-life  = 8.0 days Original mass = 728 g Time elapsed = 6.86 weeks = (6.86 ×7)…

Q: In the next step of the neptunium-237 decay series, very unstable francium-221 is produced.  Given…

A: We know that the radioactive decay follow first order reaction.

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

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Q: A 60 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

A: Given: Half-life = 12 hours Radioactivity follows first-order kinetics. First calculate the rate…

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5 perxent of…

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

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

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Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 5.2 g remain. What is the original…

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Q: Tc-99m is the most commonly used radioactive isotope in medicine. It is a gamma emitter and has a…

A: The half life of Tc-99 is six hours. There will be two half lives involved in twelve hours. The…

Q: 1. After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: The half-life of carbon-14 is 5730 years. What does this statement mean? [A] It means that carbon-14…

A: Given: The half-life t12 of carbon-14 is 5730 years

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.3 g remain. What is the original…

A: Answer

Q: 0.132-g sample of Fe-29 (half-life is 44.5 days) is allowed to decay for 265 days. What quantity of…

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Q: The half-life of Po-211 is about 0.5 seconds. Po-211 alpha decays to Pb-207. For the following times…

A: A question based on nuclear chemistry, which is to be accomplished.

Q: What is emitted in the nuclear transmutation? 27^Al(n,?)^24 Na a neutron a gamma photon a beta…

A: The above reaction notation shows nuclear transmutation . The target nucleus is Al , the bombarding…

Q: Calculate the binding energy per nucleon of boron 11 if the atomic mass of boron 11 isb11.00931 amu

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Q: The cesium-131 nuclide has a half-life of 30 years. After 120 years, about 3 g remains. The original…

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Q: The half-life of carbon-14 is 5730 years. The wrapping of an Egyptian mummy gave off 3.8 counts per…

A: From the given data we haveHalf life of carbon-14=5730 yearsWrapping of mummy=3.8…

Q: Which of the following isotopes below will most likely undergo fission in a nuclear reaction? O…

A: Nuclear fission is a reaction in which a molecule beak down into two other small molecules with mass…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.2 g remain. What is the original…

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Q: If a rock contained 12.0 g of 4°K when the earth was formed 4.54 billion years ago and the half-life…

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Q: With a half-life of 6.56 minutes, aluminum-29 decays to silicon-29 nuclide. After 18 minutes, what…

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Q: Next step of the neptunium-237 decay series, very unstable francium-221 is produced. The half-life…

A: Given: Half-life of  francium-221 = 5.00 minutes Initial mass of francium-221 = 6.12 grams Time…

Q: 38.)In a cyclotron facility, 106 atoms of F-18 were created. The half-life of F-18 is 110 minutes.…

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Q: Determine the binding energy per nucleon for bromine-81. The average mass of Br-81is 80.9163 amu.…

A: Binding energy: As a nucleus is made up of neutrons and protons, there are forces of repulsion…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 2.5 g remain. What is the original…

A: Given :-  Amount of sample left after 120 years = 2.5 g  Half-life kf Cs-131 nuclide = 30 years  To…

Q: Uranium235 decays to a form of Pb207 with a half-life of 710 million years. If an outcrop of rock…

A: Half life of the parent isotope = 7.1 × 108 years Since radioactive decay follows first order…

Q: A 58 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

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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.