50. Selenium-82 undergoes double beta decay: Se - Kr + 2 je¯ + 27 This low-probability process occurs with a half-life of 3.5 x 1027 s, one of the longest half-lives ever measured. Estimate the activity in an 82.0-g (1.00 mol) sample of this isotope. How many 82Se nuclei decay in a day?

Q: The half-life for the alpha decay of 226Ra to form 222Rn is 1.60×10 y. Suppose the energy of the…

A: Solution           Hence the temperature of water 23.79 c

Q: ng radioactive isotopes is the most stable

A:

Q: Barium-142 is an beta emitter with a half-life of 11.0 min. If we start with 2.500 g of 142Ba, what…

A: The number of half-lives (n) can be calculated as

Q: The following reaction represents what nuclear process? 214 Pb 214 Bi + 82 83 A. positron emission…

A: The various nuclear processes are discussed belowPositron emission: In this process, the mass number…

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: Moonrock collected by a US Apollo mission is estimated to be 4.30 billion years old by uranium/ lead…

A:

Q: How much time in minutes would it take for a 2.301 g sample of 3H to decay to a mass of 1.789 g if…

A: The initial concentration (N0), final concentration (N), and time (t) required to convert the…

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: A radioactive sample contains 1.55 g of an isotope with a half-life of 3.8 days. What mass of the…

A: The process in which energy is lost by unstable atomic nucleus via radiation is known as radioactive…

Q: Bi-191 has a half-life of only about 12 seconds. A large radioactive sample contains only 6.2 x 109…

A: Half life of Bi-191 = 12 sNumber of atoms of Bi-191 = 6.2 x 109 atomsNumber of moles of Bi-191 = ?…

Q: -33. The number of radioactive nuclides in a sample decays from 1.00 × 1020 to 2.50 × 10º in 10.0…

A:

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

A:

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 30.9 days decay…

A:

Q: A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given,0.050 mg of technetium-99m,Half-life is 6.0 hours.1.0×10-3 mg

Q: Potassium-argon dating is used to measure the age of rocks formed from cooled lava by determining…

A: Given, Potassium-40 decays into 40Ca ( 89.1 % of the time ) and 40Ar ( 10.9 % of the time )  Half…

Q: A patient is given 0.050 ug of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given: Mass of technetium-99m = 0.050μg half life= 6.0 h Mass of technetium to decay= 1.0×10-3μg

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

A:

Q: Hospitals use radioactive tracers in many medical tests. After the tracer is used, it must be stored…

A: Given, The proportion of radioactivity remaining after t days is e−0.087t.

Q: A radioactive isotope has a half life of 17.1 minutes. How long will it take for the radiation from…

A: Radioactive decay follow first order kinetics

Q: Find the activity of a sample containing 1.51 x 10-6 g of  6027(Co) (T1/2 = 5.27 years).

A:

Q: A radioactive isotope has a half-life of 41.7 minutes. how long will it take for the radiation from…

A:

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: A 26.00-g sample of water containing tritium, 31H, emits1.50 x 103 beta particles per second.…

A: In radioactive decay, radioactive atom's nuclei (unstable) eject energy as well as charged particles…

Q: The radioactive nuclide P# has a half-life of 14.3 days. How long would a waste containing 10 mg/L…

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

Q: Gallium-65 has a half-life of 15.2 minutes. a. How long would it take for 99.0% of a sample of this…

A:

Q: Part 1 The half-lives of 235U and 23$U are 7.04 x 10° years and 4.47 x 10° years, respectively, and…

A:

Q: The half-life of the radioisotope 63 Eu 158 is 1.0 hour. How many hours will the decay of 160-g…

A: Half life of first order reaction is independent of initial concentration

Q: A radioactive isotope has a half life of 16.9 minutes. How long will it take for the radiation from…

A:

Q: initial activity of the sa

A:

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: 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: How old is a rock that contains 0.065 g of uranium-238 (t₁/2 = 4.5 x 10⁹ years) and 0.023 g of…

A:

Q: For a gamma scan of a liver, a patient ingests a 15 MBq sample of 99Tc*. It decays with a 6.0 hour…

A: Option D) We expect the 35p to decay by beta-minus. The daughter nucleus is 355.

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by…

A:

Q: 4. Complete each of the following nuclear equations AHe 2 56 Mn + 59 Co ? + 27 a.

A:

Q: What kind of nuclear radiation is this? 65 65 0 952 Ky → 9³L + e 32 33 -1

A: Here we are required to find the kind of nuclear radiation .

Q: A radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013…

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.50 billion years old by…

A: Given : Time = 3.50 billion years old. Mass of uranium-238 = 1.540g Half life = 4.47 x 109 years

Q: The radioactive isotope 212Pb has a half-life of 10.64 h. A sample containing this isotope has an…

A:

Q: Macmillan Learning A 210.2 ng sample of an unknown radioactive substance was placed in storage and…

A: All radioactive decay follow first order kinetics  For 1st order reaction  At = Ao/2n  Where n =…

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.