The isotope Carbon 14 decays by β emission and has a half-life of 5730 years. The carbon in living matter has an activity of 15.3 counts/minute/gm. A sample of ancient papyrus shows a count of 4.1/hour/gm. What is the approximate age of the papyrus? Select one: a. 730 years. b. 44,700 years. c. 10,900 years. d. 7,300 years.

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: B. Carbon-14 is a radioactive isotope of carbon that has a half-life of 5600 years. It is used…

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Q: 1. Calculate the binding energy (in MeV) per nucleon for an a-particle (He nucleus), given that the…

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Q: (a) Write the equation for the decay of 232 Th by a single alpha particle. (b) Determine the energy…

A: To find :  equation of decay energy released  in this decay  percentage of thorium nuclei left…

Q: The number of radioactive atoms in a sample decay as the emission of radiation proceeds and this may…

A: According to the data given Half life is 3hr And relationship given is . N(t) = N0 e(-t/£)

Q: Part A 90 You are examining a sample of rock that contains 1.6x1010 230 Th atoms decay by alpha…

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Q: What is the mass of 1ci of 227TH? If the half-life is 1.90 years. O m = 1.11x 10-2g O m = 1.21x…

A: T1/2 = 1620 years = 1620 x 3.15 x 107s λ = 0.693/ T1/2 = 0.693/(1620 x 3.15 x 107 s)

Q: The number of radioactive atoms in a sample decay as the emission of radiation proceeds and this may…

A: Let original number of atoms = NoLet the number of atoms present after time "t" = N

Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…

A: Given. t/T = 2 N(t) = No(1/2)t/T

Q: By READING the R vs t graph shown below, determine R, & the half-life. R (x10¹2 decays/h) 80 60. Ro…

A: Given From the given graph of Decay rate vs time  R0 is the rate of decay at t =0 Therefore ,   R 0…

Q: The half life for the decay of carbon-14 is 5.73*10^3 years. Suppose the activity due to the…

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Q: taining 6 x 10" unde isotope has an activity half-life?

A: Hey there, since you have posted multiple questions. We have answered the first one for you. Please…

Q: The radiocarbon content of 14C decreases after the death of a living system with a half-life of 5730…

A: The formula of the radioactivity is given below where, T is the half life, t is the time, Ro is the…

Q: Q1(i). The half-life of 20kg of Bismuth-210 is 20 minutes. Explain this statement.  (ii). A…

A: (i) Given: Mass of Bi-210 is 20kg. The half life is 20min. Explanation: Half life is the time…

Q: A freshly prepared sample of a certain radioactive isotope has an activity of 12 mCi, Alter 9.6…

A: Given data, Activity of the fresh sample = 12 mCi Activity of the sample after 9.6 minutes = 6 mCi

Q: Bananas contain 3.58 mg of potassium per gram. 0.0117% of natural potassium is the radioactive…

A: Most of the nuclei present in nature are unstable. That's why nuclear decay occurs. The Nucleus…

Q: What is the binding energy per nucleon of an alpha particle? The nuclear mass of an alpha particle…

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Q: Consider a fictional radioisotope X (311.1766 amu) a. If a 0.750 g sample of X-311 releases 5.75 x…

A: Given that:Atomic mass, M=311.1766 amua) m=0.750 g=0.750×10-3 kgN=5.75×1016Mass of alpha particle,…

Q: Uranium-238 undergoes alpha decay. Into what element does Uranium 238 transmute? What is the atomic…

A: 2.Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle. An…

Q: If a 10-gram sample of a radioactive substance has a half-life of 6000 years, how much would be…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: An artifact classified as charcoal, found in a site at Epirus, Greece, is found to have a 14C…

A: initial radioactivity(Ro)=0.255 counts per second final radioactivity(R)=4.36 X 10-2 counts per…

Q: 1. The decay of radioactive substance is given by -t T N = Nᵒe (1), where N is the number of atoms…

A: You are using incorrect symbol for Tau (decay constant).

Q: Carbon is one of the fundamental elements in everything that's alive on Earth. The three naturally…

A: Carbon has generally three isotopes found in nature. Isotopes are those which have the same proton…

Q: radioactive

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Q: A purified sample of Mo-99 contains 370 million Bq. a. What mass does this represent if the…

A: It's a moderate-level question of radioactivity. It's a little bit confusing because 1st question…

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

A: The radioactive dating of rocks formed from cooled lava is determined by using parallel decay of…

Q: A radioactive nuclide decays through two modes. The first mode has the branching ratio 0.79 and the…

A: According to question, parent nuclide decay in two modes, where, the branching ratio of first mode…

Q: 10. The radioactive isotope (82Sr) has a half-life of 25.4 days. A sample containing this isotope…

A: Given, The half-life of radioactive elements is 25.4 days The initial activity, R=4.50×108 Bq

Q: a. Compute the binding energy of the reactants and of the products in the nuclear fusion reaction…

A: (a) Binding energy of 3H:    B.E3H=mH+2mn-M3Hc2  =1.007825+2×1.008665-3.016049×931.5  =8.48 MeV…

Q: Consider a small pot with a copper base. The base has a thickness of 2.0 mm and a diameter of 15 cm.…

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Q: What is the binding energy per nucleon for ?? 13 27 (Aluminum – 27)? Note: A neutral ?? 13 27…

A: The binding energy of a nucleus is the energy required to completely disassemble the nucleus into…

Q: A radioactive sample has a decay of 0.2193/min. a) What is the half-life? b) If at the start of an…

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Q: Plutonium-239 (atomic number 94) is a by-product of nuclear power plants. It decays via alpha and…

A: A) decay constant = 0.693/half life = 0.693/24100 = 0.0000287 yr-1 = 0.693/(24100*365*86400) = 9.12…

Q: Complete the following nuclear fission reaction of thorium-232. 232Th + n → 99Kr + 124Xe +      ?…

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Q: A sample of carbon-14 initially consists of 5 × 10 24 particles. Carbon-14 has a half- life of 5730…

A: Solution: a. Calculate the decay constant for carbon-14 using the following relation. k=0.693t12…

Q: A.) Natural potassium contains 40K, which has a half-life of 1.277 ✕ 109 y. What mass of 40K in a…

A: Decay Rate: The independent variable that is determined by taking the reciprocal of mean of a…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.