Bi−210 is a beta emitter with a half-life of 5.0 days If a sample contains 1.0 g of Bi−210, how many beta emissions would occur in 5.0 days?

Q: The half-life of strontium-90 is 28.0 years. How many grams of this nuclide in a 4.60-g sample will…

A: Half-life time t12=0.696k;   k is decay constantandt=1kln(m0m)m0 is mass of at time t=0m is mass of…

Q: Technetium-99m has a half-life of 6.01 hours. If a patient injected with technetium-99m is safe to…

A: Half-life: The half-life of a chemical reaction is time needed for half of an initial concentration…

Q: A radioactive isotope has a half life of 98.9 minutes. How long will it take for the radiation from…

A: Given , Half life = 98.9 minutes Initial concentration = 325 pCi Time ,t = ?

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: 1. A substance has a mass of 5 grams after decaying for 100 minutes. What was the mass of the…

A: Given that: Mass of substance left after decaying = 5 g Total time for decaying of substance = 100…

Q: The nuclide 3Cl decays by beta emission with a half-life of 37.2 min. A sample of 0.40 mol of H*Cl…

A: Half life of the reaction is the time of the reaction in which the concentration of the reactant…

Q: Nuclear transmutation happens when a radioisotope disintegrates on its own giving alpha or beta…

A: When the radioactive elements present in nature spontaneously decay by a process that causes…

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

A:

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: The Radioactive decay follows first-order kinetic and thereby its formulae. As we know, t1/2 × k =…

Q: A sample of lead isotope Pb decays by emitting an alpha particle to form the nuclide W. If the half-…

A: Radioactive Decay is the process where an unstable atomic nucleus loses energy in the form of…

Q: A substance has a half-life of 2.045 minutes. If the  initial amount of the substance was 132.8…

A: Given,  Half-life, t1/2  = 2.045 minutes Initial ammount, A0 = 132.8 gram

Q: Uranium-235 decays to Lead-207 with a half life of about 704 million. years. if you find a 1000g…

A: Half life of Uranium-235t12 = 704 million years Initial amount of fossilNo= 1000 gms Final amount of…

Q: 222Rn has a half-life of 3.82 days. If a sample contains 36.2 mg of 222Rn, what mass of the isotope…

A: We have to calculate the amount after 6.81 days.

Q: A radioactive isotope has a half life of 17.4 minutes. How long will it take for the radiation from…

A: Half life is a time taken to half the concentration of the substance present. here , the radioactive…

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: 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: What is the half life of a radioactive sample , if 3/4 of its nuclei decay in 2 years ?

A: Given:The amount of nuclear decay in 2 years = ¾ th of initial massAssume that the initial mass =…

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 of Cs is 30.2 years. Intial amount sample = 100 g  Final amount sample = 1.00 g

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.4 g remain. What is the original…

A: The Answer to the following question is-

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: this nuclear reaction would generate ____ radiation Po 214 —-> Pb 210 + _____ Alpha None of the…

A: Radioative decay is the type of process in which an unstable atomic nucleus loses energy in the form…

Q: A 40.0 mg sample of a radioactive substance decays to 10.0 mg in 10 days. What is the half-life of…

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: A sample of lead isotope Pb decays by 209 82 emitting an alpha particle to form the nuclide W. If…

A:

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: An 80 g sample of radioisotope decayed to 10 g after 24 days. What was the total number of grams of…

A:

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 radioactive nuclide Co has a half-life of 8.5 hours. What mass of Co remains from a 0.0196 g…

A: Half life = 8.5hrs  Mass = 0.0196g  t = 18hrs

Q: 2. If a sample known to be about 17190 years old has 400 carbon-14 atoms, how many atoms were in the…

A: When organism died absorption of C-14 stops and starts diminishing. The radioactive decay follows…

Q: At a certain instant, 100 grams of radioactive substance is present. After 20 years, 99.76 grams…

A: The half-life is the time required to change the initial amount to half of the amount. It is denoted…

Q: If the half-life of a radioactive isotope is 32 days, how many half-lives must pass before a 3.0…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: Iodine-131 undergoes beta emission with a decay constant of 0.0864 1/days. If you start with 35.0 mg…

A:

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

A:

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: -137, a beta emitter has a half-life of 30 vears

A: Dear student I have given answer to your question in the image format.

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: How much of a 0.230 g radioactive sample with a half-life of 8 hours would remain after a period of…

A:

Q: A radioactive isotope has a half life of 60.2 minutes.How long will it take for radiation from a 325…

A: The radioactive decay of an isotope follows a first-order reaction, The integrated rate law for a…

Q: One of the nuclides in spent nuclear fuel is U-235, an alpha emitter with a half-life of 703 million…

A: Using the given half-life period, rate constant, k can be determined.

Q: A radioactive isotope has a half life of 83.3 minutes. How long will it take for the radiation from…

A:

Q: 1. If a sample contains 100 g of a radioactive isotope, how much will be left after 3 half lives? 2.…

A: Since you have posted a question with multiple sub-parts,we will solve first three sub-parts for…

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

A:

Q: The half-life of a given radioactive substance is 2.5 minutes. What fraction of the original…

A: Given, half-life , t1/2 = 2.5 min                     and, t = 10 min We need to calculate the…

Q: A radionuclide undergoes beta decay with half-life of 30.0 years. How many years will it take for 25…

A:

Q: A radioactive isotope has a half-life of 84.5 minutes. How long will it take for the radiation from…

A: Half life t1/2 = 84.5 min = 5070 s

Q: After 103 days, only 2.3 g of a radioisotope remains from a sample that originally has 150 g of it.…

A:

Q: Bi – 210 is a beta emitter with a half-life of 5.0 days. Part A If a sample contains 2.1 g of Bi -…

A: Given Half Life = t1/2 = 5.0 dayskt1/2  = 0.693k * 5 days = 0.693k = 0.1386 day-1

Q: Iron-59 has a physical half-life of 45 days. If 96 g of a radioactive iron sample (59Fe) is received…

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…

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.