A radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013 disintegrations per 20 min. What percentage of the nuclide will have decayed after 200 days? How many atoms of nuclide will remain in the sample? What is the half-life of the nuclide?

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 5.30 x 1011 Bq when…

A: Given data:     Decay rate, dNdt=5.30×1011Bq    Nuclei, N = 2.50 ×1015

Q: From the following numbers of protons and neutrons in the nucleus, choose the symbol for the…

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Q: A certain radioactive nuclide decays with a disintegration constant of 0.0256 h1 (a) Calculate the…

A: Given(s): Decay constant, λ=0.0256 h-1 Require: Half-life, t12=? Fraction of sample left after,…

Q: A radioactive material initially is observed to have an activity of 1000 decays per second. If 9.0…

A: Given : A0 = 1000 decays/sec A = 100 decays/sec t = 9 hours

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Q: Ch31 P34. A rare decay mode has been observed in which 222Ra emits a 14C nucleus. The decay equation…

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Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 4.70 x 1011 Bq when…

A: Given : Decay rate = 4.70 × 1011 Bq             Nuclei = 1.70 × 1015

Q: The probability that a randomly chosen nucleus in a radioactive sample will have decayed in a given…

A: Sample of radio active nucleus decayed = 96.875 %

Q: Krypton-81m (81mKr) is a radioactive isotope with a half-life of 13.1 s that is often used in…

A: The correct option is (e) 50.26 s

Q: A radioactive source consists of 6.4 x 10^11 atoms of a nuclide of a half-life of 2 days. A second…

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Q: Half-life of radioactive element 13153I is 8.0252 days. (A) Its decay constant, λ (B) Percentage…

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Q: The radioactive isotope (95 Nb) has a half-life of 35 days. A sample containing this isotope has an…

A: Let the half -life of the isotope be denoted as t1/2 .The expression for the decay constant λ in…

Q: 10. (a) Calculate the binding energy per nucleon of a sodium nucleus (Na) in MeV nucleon". The…

A: As it is a multiple question I answered first question only. Kindly please re-submit the question…

Q: Using a nuclidic chart, write the symbols for (a) all stable isotopes with Z =60, (b) all…

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Q: 1. A radioactive substance has a half-life period of 60 days What is the disintegration constant?…

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Q: he isotope neptunium-229 ( 229 93Np) undergoes alpha (4 2He) decay. Write the reaction equation and…

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Q: A radioactive isotope has an activity of 9.34×104 Bq initially. After 3.10 hours the activity is…

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Q: Calculate the binding energy per nucleon for 59Co, 75As, 9Be, and 208Pb. (For the atomic masses, see…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: A certain radioactive nuclide decays with a disintegration constant of 0.0137h1. (a) Calculate the…

A: Given  Disintegration constant λ=0.0137 h-1 (a)  half life T1/2 =0.693λ T1/2= 0.693/0.0137…

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: 49. A radioactive nuclide emits an a-particle and two B-particles. Compared with the original…

A: The alpha decay is a process in which the atomic number of the daughter nuclide is reduced by 2 and…

Q: Which of the following nuclides has the largest nuclear binding energy per nucleon? 44 Ca 20 O 206…

A: From the nuclear binding energy curve:

Q: The steps below show three of the steps in the radioactive decay chain for 232 90Th. The half-life…

A: Given: The steps below show three of the steps in the radioactive decay chain for 232 90Th. The…

Q: 1 Nuclear Radius The density of nuclear matter can be estimated by assuming A spherical nucleons of…

A: As radius is given as r=r0A13, where r0 is a constant equal to1.2×10-15 m and A is number pf…

Q: The half-life of the radioactive nucleus 226 88Ra is 1.6 ᵡ 103 yr. If a sample initially contains…

A: The expression for the decay constant(λ) is given as, λ = ln 2t1/2, where t1/2 is the half-life…

Q: The decay rate of an isotope is initially R0 but after one half-life has gone by, the rate is R0/2.…

A: Required : Decay rate at the end of the next half life.

Q: A (ə) ?H + H - x + n 4 2He o He 3 3 H. A (b) ?H+ 스x → 글He + bn O He Не 3 Не 2 He 3 1 O H

A: a) Answer is H24e The unknown mass number is 2+3=A+1A=5-1=4 The unknown atomic number is 1+1=Z+0Z=2…

Q: The nuclide 10,4 Be undergoes spontaneous radioactive decay to 10,5 B with emission of a beta…

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Q: From the following nuclide symbols, determine the total number of nucleons, as well as the number of…

A: Nucleons consist of atomic nuclei, namely the protons and the neutrons. The total number of nucleons…

Q: A radioactive nucleus has half-life T1/2. A sample containing these nuclei has initial activity R0…

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Q: 234 Pa → 4  He + ______ 91               2   When balancing the nuclear reaction, explain the…

A: P91234a → H24e + ? To find: the daughter nuclide

Q: 6. A nuclide decays by emitting x alpha particles and y beta particles to form an isotope of the…

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Q: A nuclide whose "generic" symbol is 6430X would have protons and neutrons.

A: The generic symbol of a nuclide is given as X3064.

Q: 38 Which statement explains the meaning of the half-life of a radioactive substance? A half the time…

A: Every radioactive substance has a characteristic property which is independent of the amount of…

Q: . The activity of a radioactive sample decreases by 93.75 % in 2.5 years. What is the half-life of…

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Q: Answer the following questions regarding the radioactive isotope radium-226. A.Write a nuclear…

A: Given, Radium isotope Ra-226

Q: The radioactive isotope Pt-188 decays into a stable nuclide after a series of 4 separate decays. The…

A: Eu63144  undergoes alpha, alpha, +beta,+beta decay...

Q: A 162.0-mCi sample of a radioactive isotope is purchased by a medical supply house. If the sample…

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Q: What fraction f1 of a radioactive sample will be left after 3 half‑lives? f1 = ? What fraction f2…

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Q: 3. The radioactive isotope ("Nb) has a half-life of 35 days. A sample containing this isotope has an…

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Q: 22. The nucleus of iron Fe is more stable then the nucleus of bismuth 203Bi. Which of the following…

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Q: What is the missing in this nuclear equation? Mg 1224 + n01 - Na 1123 + a. e -10 b. e +10 C. H11 d.…

A: Use the conservation of mass and the conservation of charge to find the unknown element.

Q: The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours.…

A: Given, The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10…

Q: Radioactive nuclide, 9ºSr, has a half-life of 30 years. What percent of a sample of 9ºSr will remain…

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Q: Initially, a particular sample has a total mass of 360 grams and contains 512 x 1010 radioactive…

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Q: The amount of radioactive 40K in a 70kg person is approximately 5000Bq. A) what is the number (N) of…

A: mass of person (m) = 70 kg Activity (A)  = 5000 Bq Half life of K40 = 1.25×109 years