Question 7 a) State the equation which describes how the number of nuclei of a certain radioisotope varies with time. the meanings of all the terms in the equation. b) Explain the exponential decay equation. 12.15

Q: Choose the BEST answer to the following. The equation that most underlies energy release in nuclear…

A: The equation in option (a) gives the energy of a photon.

Q: The activity of a sample of a radioisotope at some time is 10.9 mCi and 0.42 h later it is 6.60 mCi.…

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Q: When we talk about radioactive decay, we often talk about a half-life, i.e. the amount of time it…

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Q: Madame Curie filled glass vials with pure radon, produced by her radium, for use in hospitals. Radon…

A: Let us analyse the question in step 2.

Q: 3. An ancient club is found that contains 150 g of pure carbon and has an activity of 5.5 decays per…

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Q: 1. Neutron captured by beta decay happened to 238Np3 is irradiated with neutrons. a. Write the…

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Q: Fission reactions occur only for nuclei with large nucleon numbers, while exoergic fusion reactions…

A: The ratio of the neutron and proton for stable nuclides or light nuclides is: NZ=1 Here, N…

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A: Given : To explain each term.

Q: Write a nuclear equation for the type of decay each of these unstable isotopes is most likely to…

A: For the elements provided, they will undergo various decay modes Alpha decay, beta (minus) decay and…

Q: If 3.92 half-lives have occurred, what amount of radio-active material would be left if you began…

A: The radioactivity formula is  N = No12n where, No is the initial amount, n is the number of half…

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Q: calculate the age of the earth.

A: The decay formula is to be used. Half life of both uranium is given.

Q: Iron-58 and bismuth-209 fuse into a large nucleus plus a neutron. Write the reaction equation and…

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Q: A nucleus undergoes a transmutation by alpha decay. The daughter nuclide is 2 a) Determine the…

A: a) Given, the daughter nuclide is 222Rn86 . In alpha decay the mass number decreases by 4 and the…

Q: a) State the equation which describes how the number of nuclei of a certain radioisotope varies with…

A: the equation which describes how the number of nuclei of a certain radioisotope varies with time is…

Q: A Geiger counter registerss a count rate of 6,800 counts per minute from a sample of a radioisotope.…

A:

Q: What is the binding energy of nucleus? Draw the binding energy per nucleon with the mass number and…

A: Binding energy of a nuclus is defined as as the energy liberated when a nuclus is breakdown to its…

Q: The decay rate of a radioactive source decreases by 28% in 80 h. Determine the half-life, decay…

A: The decay rate for a radioactive material follows the following decay equation A=Aoe-λtA is the…

Q: NASA and DOE selected three design concept proposals in June 2022 for a fission surface power system…

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Q: a) The activity of a radioactive source is given by dN AN dt where N is the number of nuclei present…

A: A) The activity of a radioactive source is given by : -dNdt = λN initial number of nuclei = No at t…

Q: A radioactive sample contains 1.55g of of an isotope with half a life of 3.8 days. How much of the…

A: Given data:  Original amount of substance (N0) = 1.55 g Half life (T1/2) = 3.8 days Time (t) = 11.4…

Q: 18) What is the remaining amount of radioactivity when the Starting amount is 12.5-g and there was…

A: Given data: Initial amount of the sample m0 =12.5g Number of half- life n =4.25

Q: Which of the following statements is true? a. The activity per unit mass of a radionuclide is termed…

A: The second statement is true as this is the law of radioactivity. dN/dt is directly proportional to…

Q: Please make sure you are sufficiently precise in your answers that the BE per nucleon can be…

A: given atomic mass = 67.9248476 u  A = 68

Q: A sample of a radioactive isotope is placed near a Geiger counter, which is observed to register 160…

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Q: Q1) As of early 1981, approximately 1500 000 litres (1500 m³) of radioactive water were located in…

A: We are given the activity of the sample in water which was Cesium. We are also given half life of…

Q: Radon 23Rn produces a daughter nucleus that is radioactive. The daughter, in turn, produces its own…

A: To Determine: The total number of Nα and Nβ- particles that are produces in this reaction.

Q: d) Below is a decay curve for iodine-131. This is used in the treatment of thyroid cancer.…

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Q: radioactive substance has a half life of 2120 years. A) Determine the rate constant for the decay…

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Q: what type of radioactive source would you use to treat deep-seated brain tumors-alpha , beta, or…

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Q: A patient is injected with a radioactive isotope with a radiological half life of 12 days. The…

A: Option: A

Q: 20.0 hours after being ingested 74.5 % of the original radioactive atoms have decayed or been…

A: Given,The amount of particles initially = N0The particles present after 20 hours, Nt = 0.255 ×N0…