Half-life of polonium-209 is 102 years. How many alpha particle are emitted in 1 second from 2 mg sample of polonium? Half-life of polonium-209 is 102 years. How many alpha particle are emitted in 1 second from 2 mg sample of polonium?

Q: Lead-214 releases both an alpha and a beta particle. What element results and what is its mass…

A: Beta particle is similar to the emission of an electron and alpha particle is similar to the…

Q: Which of these statements about fission and fusion are correct? Select one or more: a. Fission…

A: Nuclear fission is the reaction in which heavy nuclei splits into small nuclei with a large amount…

Q: D. 0.00 MIN A. 0.6 mR/hr B. 3 mR/hr C. 75 mR/hr D. 375 mR/hr 2. If the exposure rate at 10 m from a…

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Q: If a material has a half life of 92.5 days, how long will it take for 75% of the material to decay?…

A: Half life of the material=92.5days 75% of the material decay

Q: A Geiger counter registers a count rate of 5,600 counts per minute from a sample of a radioisotope.…

A: The count rate is 1400 counts per minute. The initial count rate is 5600 counts per minute.…

Q: Element X has 3 isotopes. One of the isotopes has a mass of 59.5 with an abundance of 43.3%. Another…

A: We know that, Average atomic mass of an element is a weighted average of all masses of all isotopes…

Q: The deuteron binding energy may be best expressed as Group of answer choices mn + mp - md where the…

A: We need to calculate the binding energy of deuteron nucleus.

Q: ing on a Geiger counter at 155 cm from a radiation source was 7.620 x 10^3 counts per minute (cpm).…

A: Given:- The distance of the Geiger counter from radiation sourced = 155 cm  The reading of the…

Q: How long will it take for the activity of an oxygen-15 sample to decrease from 9.8 × 10¹3 Bq to 2.2…

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Q: https://www.walter-fendt.de/html5/phen/decaychains_en.htm A)Uranium -Radium series. Click on “next…

A: always remember the decay process in which helium nucleus ( 42 He) is present; it is alpha decay and…

Q: Which of the following is/are true about Alpha particles? Mark all that apply. They have a higher…

A: We know that alpha particle is doubly charged helium ion having mass equal to 4u. Alpha particle…

Q: Cs-137 has a half-life of 30.5 years. If the initial amount of sample is 10 g how much will be left…

A: For heavy nuclei, due to increased coulombic repulsion, the number of protons and neutrons may not…

Q: Plutonium has a half-life of 80 million years. How long will it take for a sample of plutonium to…

A: When a nucleus becomes unstable it will undergo radioactive decay to attain a stable configuration.…

Q: The Dead Sea scrolls, a collection of written texts mostly on dries animal skins, were found in…

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Q: raph the “Number of Nuclei in the Sample” versus the “Half-life Number.” If the sample has 1/8 of…

A: The final concentration of radioactive nuclei is We know that;Here, n is the number of half-lives,…

Q: I Review I Const A sample of 1.5x1010 atoms that decay by alpha emission has a half-life of 90 min…

A: Given: half life t1/2 = 90min initial number of atoms = No=1.5*1010 atoms

Q: A sample containing 1 gram of Radium-224 was stored in laboratory 100 years ago. Now the sample…

A: Given data: The mass of Radium-224 at 100 years ago is m0=1 g. The mass of Radium-224 at now is…

Q: A Geiger counter registers a count rate of 7,200 counts per minute from a sample of a radioisotope.…

A: Given: A Geiger counter registers a count rate of 7,200 counts per minute from a sample of a…

Q: A Geiger counter registers a count rate of 4,800 counts per minute from a sample of a radioisotope.…

A: Given data:  Initial count rate (N0) = 4,800 counts per minute Time (t) = 10 minutes Remaining count…

Q: Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles. i)…

A: Half life = 5.26 years Number of atoms = 2.5 ×1021

Q: A 85.0-kg person is exposed to 389 rad of radiation. How many joules did this person absorb?

A: Given, Exposed radiation= 389 rad 1J/kg = 100 rad Mass (M)=85 kg Total energy absorbed (T.E)=? We…

Q: Certain radioactive substances has a half-life of 20 min. If there is 56 lbs of it right now, how…

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Q: atomic mass unit = 1.661x10-24 grams Technetium-99 has a half-life of 6 hours. Suppose a lab has 80…

A: Half life of Technetium -99      T1/2 = 6 hours Initial amount (mo) = 80 mg  Let amount left after t…

Q: When a nucleus decays by emitting an alpha particle, what is the atomic number of the resulting…

A: Given: 88 Ra226

Q: The diagram below shows decay scheme of Uranium 238 atoms. Work out how many beta decays and alpha…

A: Introduction of Alpha α decay & Beta β decays:: When an α particle is emitted from Radioactive…

Q: How do Urainum-235 split easily when it captures an additional neutron? It says that when a free…

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Q: A radioactive nucleus decays by two different processes. The half-life for the first process is 10 s…

A: We have,T1=10 sec ; λ1=ln2T1T2=100 sec ; λ2=ln2T2 , λeq=ln2Teq

Q: A nuclear isotope has a mean lifetime of 76.7 s. What is the half life of this isotope? Number If…

A: a) Given, mean life time, τ = 76.7 s and the relation between mean life time and half life T1/2 is,…

Q: How long will it take for an amount of Radon-223 to decay to only 60% of the original amount? The…

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Q: Calculate the effects of radiation dosage in sieverts for a 55-kg person who is exposed to  3.3 x…

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Q: Isotope X has a half-life of 100 days. A sample is known to have contained about 1,500,000 atoms of…

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Q: The radioactive element 2760Co  has a half life of ______ years. If you had a sample of 17 g, about…

A: Given: The mass of sample (m) = 17 g. The half-life of cobalt (T1/2) = 5.27 years. The life of…

Q: cadmium -107 has a half -life of 6,52 hours .if you start off with sample which sample which has an…

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Q: A patient has 10% as much radioactivity as they had 4 days ago when a radioisotope was administered.…

A: The amount of radioactivity remaining after a given time: Nt=N0×12n where  Nt =  activity at time t…

Q: Iodine -131 53 undergoes beta minus decay. What is produced?

A: 53 Iodine 131

Q: The age of a piece of wood from an archeological site is to be determined using the Carbon-14…

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Q: A Geiger counter is placed at a distance 2m from a Cobalt 60 source emitting γ rays. The measured…

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Q: The isotope iodine -131 has a half-life of 8 days. If an individual is injected with 100 mg of…

A: Given that :the half-life of iodine-131, the initial amountthe elapsed time

Q: f a vial contains 600 MBq of indium-111 (In-111) at 12:30 (14 June 2014), how much radioactivity…

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Q: f the half-life of cesium-137 is 30 years, approximately how much time will be required to reduce a…

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Q: Question 8 a) Define the half-life of a radioactive material. b) State the relationship between…

A: Given that: In part a, the concept of half-life in radioactive materials is defined. In part b, the…