Which radioactive isotope would take the least Radioactive isotope Half-life of time to become stable? rubidium-91 Rubidium-91 58.4 seconds iodine-131 lodine-131 8 days cesium-135 uranium-238 Cobalt-60 5 years Carbon-14 5730 years 2.3 x 105 years Cesium-135 4.5 x 10° years Uranium -238

Q: The radioactive isotope I decays by beta emission. If the mass of a sample of iodine-131 decays from…

A: "Since, you have posted multiple questions, we will solve only first question for you. To get other…

Q: 50. Selenium-82 undergoes double beta decay: Se - Kr + 2 je¯ + 27 This low-probability process…

A: Here, the radioactive decay are first order reaction for which, rate constant (k) is related with…

Q: Carbon-14 is used in radiocarbon dating. The half-life of carbon-14 is 5.73*10^3 years. How many…

A:

Q: bromine-88 is radioactive and has a half life of 16.3 seconds. how long would it take a sample to…

A: Applying concept of radioactive decay as first order reaction.

Q: carbon from a cypress beam obtained from the tomb of an ancient egyptian king gave 9.2…

A: The decay constant can be calculated as

Q: The diagram below illustrates the radioactive decay of a sample of mercury-207. Use it to answer the…

A: The other decay product is

Q: Phosphorus-32 is a radioactive isotope with a half-life of 14.3 d (d = days). A biochemist has a…

A: A radioactive decay follows the first order kinetics where the rate of the reaction depends on the…

Q: (21) Fluorine-18 is a radioactive isotope commonly used in medicine. It has a half-life of 110…

A:

Q: If two grams of a radioactive isotope has a half-life of twenty hours, the half-life of one gram of…

A: We will use first order intergrated rate equations and half life to answer this question.

Q: A radioactive isotope has a half-life of 84.3 minutes. How long will it take for the radiation from…

A:

Q: 2Tritium H-3 has a half-life of 12.3 years. If a sample of 3 g of H-3 is produced, what will be the…

A: The radioactive decay of a substance is a first-order reaction. During this process, a heavy metal…

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: Plutonium-236 is an alpha emitter with a half-life of 2.86 years. If a sample initially contains…

A: Given, half life of Pu -236, t1/2 = 2.86 years            initial mass of Pu -236= 2.35 mg The…

Q: A sample of uranium ore contains 5.37 mg of U-238 and 2.52 mg of Pb-206. (a) Calculate the…

A: Given mass of U-238 = 0.00537 g Number of moles of U-238 = 0.00537/238 = 2.26 × 10-5 mol Given mass…

Q: ) Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles.…

A: Radioactive nuclei undergo disintegration with time. They emit different kind of particles and…

Q: .6. A sample of (_16^35)S, a ß- emitter, has an activity of 0.100 µCi. In 20.0 days, the activity of…

A: The rate of the reaction is referred to the change in the molar concentration in the distinct…

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 beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25…

A: We have given that The beta decay of cesium-137 has a half-life of 30.0 years. How many years must…

Q: Carbon-14 has a half-life of 5730 years, how old is a dress that was found to have a specific…

A:

Q: How many half-lives have passed in each of the following situations? (a) Initially the sample is…

A: SOLUTION: Step 1: (a). Half-life is the interval of time required for one-half of the atomic nuclei…

Q: A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater…

A: The radioactive decay follows first-order kinetics. We know that the half-life of carbon-14 is 5730…

Q: Carbon-11 radioactively decays by positron emission with a half-life of 20.4 minutes. If a dosage of…

A: Given that : The half-life of carbon-11 = 20.4 min We have to calculate the % of carbon-11 will…

Q: An unknown radioactive substance has a half-life of 3.20 hours. If  20.8 g of the substance is…

A:

Q: Iodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with…

A: We have given that  Iodine-131 is often used in nuclear medicine to obtain images of the thyroid. If…

Q: #5 A rock contains 0.257 mg of Pb-206 for every milligram of U-238.The half-life for the decay of…

A: Radioactive decay follows first order kinetics. The integrated rate law is as below: kt=lnAoA Here,…

Q: What is the correct symbol that is missing from the radioactive decay reaction below, and what type…

A: In decay reaction, we have to balance both atomic number and mass number.     We know Helium  is…

Q: Francium-223 is a radioactive isotope with a half-life of about 22 minutes. How much time will it…

A:

Q: A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater…

A: The radioactive decay follows first-order kinetics. We know that the half-life of carbon-14 is 5730…

Q: A rock had originally 4500 atoms of U-238 and no Pb-206. U-238 decays into Pb 206 with a half life…

A: The age of the rock has to be determined

Q: 1) Phosphorus-32 has a half-life of 14.0  days . Starting with 4.00  g  of  32P , how many grams…

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

Q: 8. For the radioactive nuclides in table 7.1, which one has the largest value of the decay constant?…

A: The question it is asked that among the four radioactive atoms which atom have higher value of decay…

Q: Radioactive Radon-222 gas (222Rn) occurs naturally as a product of uranium decay. The half-life of…

A:

Q: radioactive sample originally contains 8.0g of an isotope with a half- life of 6 days. What is the…

A:

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: Suppose a certain radioactive substance has a half-life of 2 years. Find how long it will take for…

A: Half life is the time of the reaction in which the reaction is 50% completed. Write the expression…

Q: Phosphorus-32 is a radioactive isotope with a half-life of 14.3 d (d = days). A biochemist has a…

A: Given: Half-life of radioactive nuclei = 14.3 d Initial amount = No = 0.300 g Amount at time ‘t’ = N…

Q: 3) The half-life of 238U, which decomposes to 206PB, is 4.51 × 109 y. A rock contains equal masses…

A: Given, half-life of 238U = 4.51 x 109 y. We know that, half-life of a radioactive decay is the time…

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…

Q: How many half-lives have passed in each of the following situations? How much of a 48.0 g…

A: 1. The given half life of iodine-134 is 50 minutes. The total number of half-lives observed in 150…

Q: Which of the following radioactive isotopes is the most stable? The half-life of each isotope is…

A: Half life is defined as the time required to decay to half of its original amount.

Q: If the half-life of a radioactive substance is 4 days how much material will remain after 16 days if…

A:

Q: A rock contains a Pb-206 to U- 238 mass ratio of 0.262: 1.00. Assuming that the rock did not contain…

A: The answer to the following question is-

Q: A radioactive isotope has a half-life of 46.3 minutes. how long will it take for the radiation from…

A:

Q: Cobalt-60 is a beta emitter with a half life of 5.3 years. Approximately what fraction of cobalt-60…

A:

Q: The cesium-137 nuclide has a half-life of 30 years. After 90 years, about 10 g remains. The original…

A: Radioactive decay follow first order kinetics. Half life of Ce is 30 yrs. Mass of original sample =…

Q: Cesium-131 has a half-life of 9.7 days. What percent of a cesium-131 sample remains after 64 days?…

A:

Q: A rock contains the radioactive isotope K − 40 that decays with a half-life of 1.3 billion years and…

A: Answer: Nuclear reactions are first order reactions, therefore integrated rate law of first order…

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

A:

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that -  Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…

Q: The half-life of a particular radioactive isotope X is 10.0 days. (1) Determine its decay constant.…

A: half life = 10.0 days.

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.