The % abundance of a radioactive isotope of element X is 0.0234%. This isotope is decaying at a rate of 1.5x10 disintegrations per sec in a 0.0100 mole sample of element X. (The 0.0100 moles includes all isotopes of X). What is the half-life of this isotope in yean?

Q: The most abundant radon isotope is radon-222, which is an alpha emitter with a half-life of 3.8…

A: Given - Half life of Radon-222 = 3.8 days            Initial level/amount 0f Rdon-222 = 500 Bq m-3…

Q: The amount of ",C still present at any time in the tree may be denoted as N and No, is the initial…

A:

Q: ome Tools Section 5.5 Exercis... x Section 5.5 Proble.. Section 5.5 Proble... CRA 6 / 15 +) 106% 6.…

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Q: The isotope 208Tl undergoes β decay with a half-life of 3.1 min.  What isotope is produced by the…

A: Nuclear reaction: A nuclear reaction must cause a transformation of at least one nuclide to another.…

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: [Refere A 1.14 g sample of a radioactive isotope decays to 0.87 g in 36.3 hr. What is the half-life…

A: Given  Initial Amount [ A ]0   = 1.15 gram  Remaining Amount [ A ]    = 0.87 gram  Time ( t ) = 36.3…

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

A: Amount of rubidium = 123.0  μg  Amount of strontium = 5.5 μg Half life time of rubidium = 4.8 × 1010…

Q: 31. A Yadio chemist prepames a cobalt sample 0.100 moks trom AS pert contrining of 58CO· As per…

A: Answer :-  Half-life of 58Co =  70.87 days…

Q: The isotope 208Tl undergoes β decay with a half-life of 3.1 min.(a) What isotope is produced by the…

A: isotope is produced by the decay has to be determined The time taken for 99.0% of a sample of pure…

Q: 6C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average…

A: The half life is given as 5730 years Average Decay per Second = 10

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: The isotope 83212Bi has a half-life of 1.01 years. What mass (in mg) of a 2.00-mg sample will not…

A:

Q: Iodine-131 (131) is a radioactive isotope that is used in the treatment of cancer of the thyroid.…

A:

Q: The isotope ²¹²₈₃Bi has a half-life of 1.01 yr. What mass (inmg) of a 2.00-mg sample will remain…

A: Given, half life of  ²¹²₈₃Bi ,  t1/2 = 1.01 yr = 365 x 24 x 1.01 h = 8847.6 h            initial…

Q: (Q111) In the next step of the neptunium-237 decay series, very unstable francium-221 is produced.…

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.80 billion years old by…

A:

Q: The carbon-11 isotope has a half-life of 20.3 minutes. How long (in hours) will it take for 99.9999%…

A: Here we have to determine time required for 99.9999% of a carbon-11 sample to disappear.Given half…

Q: Q1: If you know that the half-life of a radioactive element is equal to 20 days, find the following:…

A: Radioactive active decay generally follows a first order reaction and therefore, the rate of…

Q: A sample initially contains 300 µg of 32Si (31.97415 amu), which decays with a half-life of 160…

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Q: How long does it take for 105 mg of tritium H to decay to 35.0 mg? The half-life of tritium is 12.3…

A: All radioactive decays are first order reaction.

Q: Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

A: Since no 87Sr was present when the rock was formed. hence whatever moles of  87Sr is formed can from…

Q: 214Bi is a radioactive isotope of the element bismuth with a half-life of 19.7 minutes. What…

A: Welcome to bartleby !  Introduction :  We have to calculate percentage of bismuth lost . Given :…

Q: Radiation seed therapy is a common method for treating some prostate cancers and brain tumors.…

A: Radioactive degradation follow first order kinetics.

Q: Iodine-131 is an important radioisotope of iodine that has a radioactive decay half-life and is…

A: Iodine-131 is an important radioisotope of iodine that has a radioactive decay half-life and is…

Q: Radioactive isotopes can be used to calculate the age of materials because their decay rates are A…

A:

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5% of a…

A: Radioactive decay is associated with the emission of small energetic particles e.g. beta particles,…

Q: The free neutron is an unstable particle that decays into a proton. What other particle or particles…

A: Radioactivity is a process in which unstable atomic nuclei spontaneously disintegrate into atomic…

Q: A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This…

A: Given: Half-life of isotope = 4.75 × 1010 years. And the ratio of 87Sr to 87Rb = 0.15

Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced.…

A:

Q: The radioactive isotope Ga decays by electron capture. If the mass of a sample of gallium-67 decays…

A: According to the integrated rate law for the first-order reaction, the concentration of reactant is…

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: If the half-life of a radioactive element is 219.3 years and the atomic weight of the radioactive…

A: The number of decay in 1 second for 1 gram sample of a radioactive element is known as Specific…

Q: A certain isotope decays by beta-decay with half-life of 24.11 days. One of the products is…

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

Q: 3. 137Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A:

Q: Promethium-147 has been used in luminous paint for dials. The half-life of this isotope is 2.5 y.…

A: Applying the concept of radioactive decay which first-order reaction. t1/2= 0.693/k Given: t1/2=2.5…

Q: Iodine-131 is an important radioisotope of iodine that has a radioactive decay half-life and is…

A: Radioactive decay follows first order rate law, we can mathematically expressed it as At = Ao…

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by…

A: Given: Half life of U235 , t1/2= 4.47x 109 yrsPresent time, t= 4.00 x 109 yrs mass of U238 = 1.430g

Q: Some watch dials are coated with a phosphor, like ZnS, and a polymer in which some of the 1 H atoms…

A: Given, The half-life of the tritium is t1/2=12.3 yr. Time t is 50 yr. The rate constant can be…

Q: Iodine-131 is a radioactive isotope. After 6.00 days, 59.6% of a sample of 13I remains. What is the…

A:

Q: very unstable francium-221 is produced. Giver f-life of francium-221 is only 5.00 minutes, if th…

A: Given,  Half life time (t1/2) = 5.00 minutes Decay constant (k) = 0.693/5.00     =  0.1386 min-1…

Q: The half-life of 98AU is 2.7 days. If you begin with 5.6 mg of this gold isotope, what mass remains…

A: Half-life is the time required for the reaction to be half completed. It is denoted by t1/2 . For a…

Q: lement X decays radioactively with a half life of 8 minutes. If there are 530 grams of lement X, how…

A: Given: The half life of the sample, (t1/2)=8 minutes. The initial amount of sample, (N0)=530 grams.…

Q: Ruthenium-106 (^ 106 Ru) is used to treat melanoma in the eye. This isotope decays by Beta ^- with a…

A: Ru has an atomic number 44 and has seven stable isotopes.27 radioactive isotopes are present.106Ru…

Q: The decay constant or the beta decay of ^99 43TC was found to be equal to 1.0x10-13/s. What is the…

A:

Q: A rock started with 4000 atoms of a parent radioactive isotope and now has 3750 daughter isotopes.…

A:

Q: The half-life of 14C is 5730 years, and the current decay rate in living organisms is 14.3…

A: Given: The activity of sample = 4.75 d.p.m/g C The activity of fresh wood = 14.3 d.p.m/g C And…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.