1. _Radioactive dating uses the half-life of different radioactive material to test the of a sample. a. Purity b. Efficiency c. nuclear stability d. age of sample 2. _In the sun, two Helium-3 fused to form a. oxygen-14 b. carbon dioxide c. nitrogen-14 d. helium-4 and 2 (',H) Ale

Q: Uranium -238 decays in a series of steps to Pb-206. When the material is very old, one can treat the…

A: Radioactive decay follows 1st order reaction.  Given the half-life, t1/2 = 4.50*109 yr

Q: = 176.5 h) to decay. Use the Calculate the time required for 46.80 % of a sample of X (t, formula…

A: Given : Half life i.e t1/2 of reactant (radioactive isotope) = 176.5 hr. And percent of reactant…

Q: Skeletal remains had lost 85%of the C-14 they originally contained. Determine the approximate age…

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Q: One of the radioactive isotopes used in medical treatment or analysis is iron-59. The half-life of…

A: Radioactive decay obeys first order decay kinetics   At=Aoe0.693t12×twhereAt= final activityAo=…

Q: 9.) Strontium 90 is a major component of the detonation of nuclear explosives: it is I dangerous…

A: We know that no of atoms  N Present at time t  are given as N= N° e-kt where N° are the initial…

Q: Age of the Earth. Suppose that at the formation of the Earth there were equal amounts of 235U and…

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Q: What is the half-lifeof radioactive element?

A: Breaking down of atomic nuclei of any radioactive substance gives the radiative emissions from…

Q: what percentage of the strontium-90 that was made 1945 still exsist now in the year 2021? the…

A: Given , Strontium -90  half life t1/2=28.9 initial concentration (concentration in 1945) = CA0 final…

Q: Radioactive Decay The half-life of palladium-100 is 4 days. After 20 days a sample has been reduced…

A: Given Data:  Half life of Pd-100 = 4 days  Reduced mass = 0.375g The formula of half life is given…

Q: A piece of literature has announced that Uranium 238( 23822U) has a binding energy of approximately…

A: We can theoretically calculate the mass of a neutron. But this will be different from the…

Q: Magnesium-27 is an unstable radioisotope. For it to become stable, it has to undergo

A: Mg has 27 mass no. and 12 atomic number. Hence, it has 12 protons and 27-12 = 15 no. of neutrons.…

Q: A wooden artifact from a Chinese temple has a 14C activityof 38.0 counts per minute as compared with…

A: Given, The activity of carbon of the wooden artifact from a chinese temple is Nt = 38.0 counts per…

Q: Enter your answer in the provided box. Strontium–90 is one of the products of the fission of…

A: Given-> Half life = 28.1 year Initial amount = 4.00 gm Final amount = 0.100 gm

Q: The half-life of Polonium-218 is 3.00 minutes.  How many half-lives pass after 18.0 minutes ?  The…

A: Concept - Radioactive decays are first order reactions. So we use the formula, Nt = No(1/2)n, where…

Q: An ancient wood sample is known to be 2500 years old. a. Knowing that the half-life of carbon is…

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Q: 18.write describing what happens to a uranium nucleus during nuclear fission

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Q: Plutonium 240, 240 24PU, has a half life of 6500 years. The new element formed after Plutonium 240…

A: While writing nuclear reaction the sum of mass number on reactant and product side are equal. Same…

Q: NUCLEAR CHEMISTRY: The mass defect of a nuclei A with a mass number of 107 is 1.361 amu. Estimate…

A: We have given that  The mass defect of a nuclei A with a mass number of 107 is 1.361 amu. Estimate…

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: Interpretation -  To determine the the age of the artifact , when a radioactive isotope carbon-14…

Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

A: Carbon Dating using data from the question and calculating the age of the sample

Q: An old wooden bowl unearthed in an archeological dig is found to have one‑fourth of the amount of…

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Q: c) What percentage of the isotope will remain after 115 days lfur 25. alpha beta and

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Q: The half-life of 1311 is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay…

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Q: If the initial sample is  1.25 g,  what mass of the original iridium‑192 remains after  65  days?…

A: Given, mass of sample = 1.25 g time, t = 65 days mass remained =0.675 g

Q: The half-life of carbon-14 is 5,730 years. Write the exponential decay function and find k. If the…

A: Half life:It is represented by the symbol t1/2. It was discovered by Rutherford. It is defined as…

Q: The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain…

A: We are given Radium -226 t1/2=1590 years                  (i) We know radioactive decay always…

Q: NUCLEAR CHEMISTRY: The mass defect of a nuclei A with a mass number of 243 is 1.586 amu. Estimate…

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Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

A:

Q: Carbon-10 is an unstable isotope with an atomic mass of 10.016853 u. It undergoes beta-plus decay…

A: The total binding energy of an atom is the sum of energy that is emitted as the atom is created by…

Q: A sample of 113m In has a half life of 100 minutes. What amount of 113m In remains (in CPM) if a…

A: An exponential decay can be described by the formula:

Q: While harder to access another radioactive isotope Tc 93 has a halt life of 2.73 hours of it weee…

A: suppose it is possible to collect Tc 93m, it would be a good substitute because of its high…

Q: The radioactive decay of Cs-137 is displayed in the plot below. 100 90 80 70 60 50 40 30 20 10 20…

A: We have to calculate  A. Half life  B.mass left  C. Percentage of original sample left

Q: 21. Half-Life The half-life of radium-226 is approximately 1620 years. a. How much of a sample…

A: Introduction: We know that this decay of radioactive elements is a type of first-order reaction. The…

Q: How many half-lives did a radio-active sample complete is 2.5 g of a sample remains from 20.0 g…

A: Half-life time: The time in which the concentration of the radioactive species decreases to half is…

Q: 131 For the radioactive isotope 15'I, the time required for 50% disintegration is 8 days. The time…

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Q: carbon-14 activity

A: Given data, Basic equation is Ae = Ao x 0.5 (t / t1/2)   Therefore,

Q: Half-life of Element X mass How much of the parent isotope and daughter product exists after 1…

A: We need to determine how much of an isotope is left after first half life.

Q: After 4.00 years a 2.0 g sample of a radioisotope remains from a sample that had an original mass of…

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Q: The binding energy per nucleon of the nucleus 73 Li is approximately 5MeV. The total energy required…

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Q: A theoretical isotope known as Du-30 has a half life of 6 months. The amount decreased from 1.50M to…

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Q: The isotope 261-Lr decays by a emission with a half-life of 2.7 min. How many minutes will it take…

A: As we know the Decay equation: λ=1tlnaoa a0= Initial concentration a= Concentration left after time…

Q: A sample of wooden artifact is found to undergo 8 HC disintegrations per minute per gram of carbon.…

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Q: Thoron has a high average annual radiation dose according to the graph. Iti eavy radioisotope formed…

A: No

Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

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Q: Write a nuclear reaction for each step in the formation of 208Pb from 228Th, which proceeds by a…

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Q: A medical technician is working with the four samples of radionuclides listed in the table below.…

A: Given Sample 19 umol Or 1/16 decreases

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.