This is more of an Astronomy question but Assume the half life of some radioactive element is 100 years. After 300 years have gone by, how much of the original radioactive element is left? (choose from the choices in

Q: Find the missing value for the radioactive isotope. (Round your answer to two decimal places.)…

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Q: An 16 g sample of an isotope of Strontium-90 was formed in 1960 explosion of an atomic bomb at…

A: In what year will only 0.625 gm of strontium 90 remain?

Q: The half-life of the radioactive isotope 137Cs is 30.17 years. How long does one have to wait until…

A: To solve this problem we have to first calculate the rate constant of the reaction using half life…

Q: Half-life is the time required for a radioactive element to decay to half of its original mass.…

A: Given: The % of original radium sample=100% The % of a sample of radium that has decayed=75% The…

Q: What is the half-life of the bizarre isotope Toddium - 419 (it is a makeup element) if after 4.00…

A: Time period, t = 4.00 weeks Initial amount, [A]o =950.0 g Final amount, [A] = 29.6875 g Calculation…

Q: The radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the…

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Q: A rock started with 2000 atoms of a parent radioactive isotope and now has 1875 daughter isotopes.…

A: since half life of isotope is 100,000 years  therefore  in 100,000 years,no. of atoms remaining=1000…

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: The spontaneous breakdown of the nucleus causes the release of energy and matter from the nucleus,…

Q: An 39 g sample of an isotope of Strontium-90 was formed in 1960 explosion of an atomic bomb at…

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Q: This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose…

A: we are here given that the half life th of radium =1600 yearssample weight/initial value of radium…

Q: A theoretical isotope X-100 has an initial mass of 500g. This isotope has a half-life of 8 hours.…

A: GivInitial mass=500g Half life=8 hours

Q: Phosphorus-32 is radioactive and has a half life of 14.3 days. What percentage of a sample would be…

A: Given,Half-life of Phosphorus-32 = 14.3 days.Percentage of sample left after 31.7 days has to be…

Q: How many half lives have passed if we measure 1 µg/g parent isotopes and 15 µg/g daughter isotopes…

A: Given: The amount of parent isotope in the rock sample = 1 μg/g The amount of daughter isotope in…

Q: 32.  A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What…

A: Given : Half life = 5700 years

Q: If we start with 1000 radioactive parent atoms and a half-life of 50 years. How many parent atoms…

A: Given,  Initial concentration = 1000 atoms       t12 = 50 years   To find = concentration after 200…

Q: A dangerous radioactive element is to be used in a medical procedure at a hospital. Its half-life is…

A: Half life of radioactive element = 4 hours. Initial mass of radioactive element = 100 gm

Q: 1) According to your data, what are the approximate half-lives of the elements A, B, C, and D? A: B:…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Samples of the following isotopes in pure form, each containing the same number of atoms, are taken.…

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Q: 2. Strontium-89 (half-life of 50 days) is effective in prostate cancer therapy with relieving pain…

A: Strontium-89 should be used because it has more half life. It has higher boiling point.

Q: self-styled archaeologist is trying to sell your museum an artifact that they claim dates back to…

A: The questions is based on the concept of radioactive decay. We have to calculate age of the sample…

Q: Krypton consists of several radioactive isotopes, some of which are listed in the following table.…

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Q: Complete the table for the radioactive isotope. (Round your answer to two decimal places.) Half-life…

A: Radioactive decay reactions are first order reactions. Since we know that the relationship between…

Q: The half-life of Ga-67 is about three days. If only 12.5% of the original sample remains, the time…

A: The time at which reactant's amount is left half of the original amount is known as half-life. The…

Q: Solve the following problems and show complete solution. A. Half life of Sr90 is 29 years. What…

A: A.     Half life of Sr-90 ( t1/2) = 29 y           Let ' t '    =  100 y       n × t1/2   =  t…

Q: 100- Using the graph to the right, answer the following questions. 90- 80- 4. What is the half-life…

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Q: What is the most likely mode of decay for each?(a) ¹¹¹₄₇Ag(b) ⁴¹₁₇Cl(c) ¹¹⁰₄₄R

A: Radioactive nuclie are unstable . They undergo spontaneous decay reaction by emission alpha, beta,…

Q: It radioactive isotope of an unknown element is an extremely hazardous species if a 56 g sample of…

A: For readio activity the rate law is lna(a-x)= kt    a = initial concentration, ( a-x) =…

Q: A particular radioactive isotope has a half-life of 3. weeks. What fraction of the original sample…

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Q: Find the missing value for the radioactive isotope. (Round your answer to two decimal places.)…

A: Since you have posted a multiple type question so I have solved first one for you. If you want to be…

Q: Even with modern lab techniques, you cannot change the half life of an element.

A: Applying isotope exchange technique which are surrounded by radioactive isotope.

Q: preting the information chart: which of the isotopes whose masses you used answering this form are…

A: Radioactive elements are unstable.

Q: 203.) The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This…

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Q: ndicate the LARGER quantity. If the two quantities are equal, write “equal”, and if there is not…

A: Given that : We have to determine the larger quantity out of the following : a) The time it takes…

Q: lodine-131, a radioactive substance that is effective in locating brain tumors, has a half-life of…

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Q: 7. A sample contains 9,000 particles of the original isotope for every 63,000 particles of the…

A: Given: Half life of original isotope (t1/2) = 19 years Initially the number of daughter isotopes…

Q: Mr. Albedo stumbled upon an unknown material in an abandoned laboratory. He believes that this…

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Q: Can someone help me solve these problems?

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A particular isotope of an element has a half-life of 56 days. What percentage of the sample will…

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Q: Sodium is an artificial isotope with a half-life of 2.6 years a.) How many protons are in an atom…

A: Given Sodium-22 is an artificial isotope with a half life of 2.6 years. a) Number of protons are in…

Q: Interconverting amount of radiðãctive děcay and half life Tin-129 is radioactive and has a half life…

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Q: If T1/2 ( half-life) of such radiant substance is 2 d. The amount will be remain after 8 d is 2 mg…

A: After the passage of each half life one- half of the sample remains. So after one half life 1/2 of…

Q: Which type of radiation interacts with matter at great depths and scatters electrons along the way?…

A: The analysis of the structure of the atom shows that the center, known as the nucleus, consists of…

Q: Show your work on all math questions! 1. You are given a 50.00-gram sample of an unknown isotope at…

A: Nuclear reactions are first order reactions. Write the formula for calculating the decay constant of…

Q: The __________ has the highest ionizing power.     positron     beta particle     gamma ray…

A: The nucleus is the heavy portion present at the center of the atom. It consists of protons and…

Q: proton ratio describes a radioactive element's half-life. up this concept because they wanted to…

A: We will choose Correct option

Q: The half-life of 14C is 5730 years. A sample contains 90.8 % of the 14C that it would contain if it…

A: Age of a given sample can be calculated using Carbon dating method :

Q: A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What is…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: Technetium-99m is an important isotope used in medical imaging (the m stands for metastable).  Each…

A: The time required to reduce the concentration to half of the initial concentration of the substance…

Q: A radioactive isotope has a half-life of 25 years. There was 100 mg of the isotope initially. a)…

A: Let m(t) represent the mass of radioactive isotope at time ‘t’ days. Then we have the function m(t)…