-137, a beta emitter has a half-life of 30 vears

Q: A normal adult jawbone contains 200mg of Carbon-14 in a living person. If scientists found a jawbone…

A: Calculate the value of rate constant (k):

Q: If you have 1 gm of pure potassium 40 (40K) that is experimentally determined to emit about 105 beta…

A: Activity of 40 K = 105 beta rays. The decay constant λ can be calculated as follows:

Q: The nuclide 3Cl decays by beta emission with a half-life of 37.2 min. A sample of 0.40 mol of H*Cl…

A: Half life of the reaction is the time of the reaction in which the concentration of the reactant…

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. How…

A:

Q: What is the half-life (t1/2) of a radioisotope if 1000 grams of the sample decays to 125 grams in…

A: The nuclear half-life is amount of time it takes for half of sample to decay radioactively.…

Q: Cobalt-60 has a half-life of 5.27 years and is used in cancer treatment. If a patient ingests 20.0 g…

A: Since the decay reactions are first order reactions hence the relationship between the time and mass…

Q: How many days will it take for a radioactive isotope with a half-life t1/2 = 134 days to decay to…

A:

Q: 222Rn has a half-life of 3.82 days. If a sample contains 36.2 mg of 222Rn, what mass of the isotope…

A: We have to calculate the amount after 6.81 days.

Q: Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric…

A:

Q: If we begin with 6.00 mg of iodine-131 (t1/2 = 8.07 hr), how much remains after seven half-life…

A: Given: Initial amount of iodine-131 = 6.00 mg t1/2 = 8.07 hr n = 7 To find: how much iodine remains…

Q: The half life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain…

A: given :-  initial amount of sample = 500 mg  half life = 1590 years  To calculate :-  amount of…

Q: Cobalt-60 is a beta emitter with a half-life of 5.3 years. Approximately what fraction of cobalt-60…

A: The half life of cobalt-60 is = 5.3 year The fraction of cobalt-60 atoms will remain in a particular…

Q: After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the half-life…

A: Amount of radioisotopes remaining = 112 of the initial amount Number of days taken for the decay =…

Q: 1. What is the half-life of a radioactive isotope if a 500.0g sample decays to 62.5g in 24.3 hours

A:

Q: PET scans require fluorine-18, which is produced in a cyclotron and decays with a half-life of 1.83…

A: Given: Half life, T1/2 = 1.83 hrVelocity of transport, v= 60.0 miles/hrfinal Concentration of F-18 =…

Q: Radioactive Decay The half-life of radium-226 is 1590 years. (a) If a sample has a mass of 150 mg,…

A: Radioactive decays follow first order kinetics. k=0.693t1/2 Calculate k. k=0.6931590 years…

Q: The number of a certain radioactive nuclide present in a sample decays from 59,122 to 429 in 9.23…

A: Given: No=59122Nt=429t=9.23 days Half life of the radioactive species refers to the time required to…

Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person. If scientists found a…

A:

Q: The half-life of a radioactive isotope is 12.8 seconds. Starting with 0.960 g of this isotope, how…

A:

Q: The half-life of iron-59 is 44.5 days. How much of a 3.00-mg sample will remain after 222.5 days?

A:

Q: Calculate the age of a fossil that had 100 g of C-14 and now it has 12.5 g of C-14. The half-life of…

A: Use first order kinetic formula to get answer. Half life is given in years so we can use first order…

Q: what fraction of a radioisotope has decayed after two half-lives?

A: The time required for a quantity of a radioisotope to decay by half is known as the half-life time.…

Q: The half life of 52Fe is 8.28 hours. Suppose we measure the activity of a sample containing 52Fe and…

A: Calculation of disintegration constant (λ):T1/2 of 52Fe is = 8.28 hours.

Q: II 24 Iours, what is the half-life of Ra-226 in years? 27 3. Arsenic - 70 has a half life of 140…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: The 4520Ca has a Half-Life t1/2 of 163 days. the value of the radioactive constant λ in day-1 is:

A: Please find the attached images for the answer

Q: The half-life of a radioactive element is 8 days. How long will it a 1.0 g sample to decay to 0.0625…

A: Radioactive decay is the process of breakdown of radioactive matter. The atomic nucleus is broken…

Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person.  If scientists found a…

A:

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: After 19 days have elapsed, 1/21 of a radioisotope sample remains undecayed. What is the half-life…

A:

Q: The half-life of cesium-137 is 30.2 yrs. If the initial mass of a sample is 1.00kg, how much will…

A:

Q: The half-life of a radioactive element is 6 months. The time taken to reduce its original…

A: Given  Half life of radioactive element ( t1/2 )  = 6 month  Remaining Concentration ( At ) = 116…

Q: Given that the ratio of C/1C 13.6 counts per minute per gram living matter remains constant, if a…

A: This problem is based on radioactivity. Since all the radioactive reactions generally follows first…

Q: Vhat is the half-life of a radioisotop

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Q: E Reae The half life of chromium-51 is 27.8 days. How many days are required for 15/16 of a sample…

A: Chemical Kinetics  1st order Kinetics  Nuclear Decay  Step-2 Has further calculation

Q: Co-60 is used extensively in radiotherapy as a source of y - rays. Its half-life is 5.27 years. a)…

A: Given, t1/2 = 5.27 years (a) The time required to decrease the activity by 35% of its original value…

Q: an artifiact has a carbon-14 concentration that is 12.5%(1/8th) of that found in living organisms.…

A:

Q: (A). Sodium-24 has a decay constant of 4.63 x 10-2 h-1. What is its half life? (B) The half life of…

A: Given that,decay constant = λ  = 4.63x10-2 hr-1   t1/2 = ln 2λ where t1/2 is the half life t1/2 = ln…

Q: decay

A: T1/2 = 28 yrs N = 0.40 g No = ? at T = 56 years

Q: In 2002, a wooden beam from the Wupatki Indian ruin in Arizona was found to contain 227 mg of…

A: Since the carbon decay reactions are first order reactions And since we know that the relationship…

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: After 119 days have elapsed, 1/21 of a radioisotope sample remains undecayed. What is the half-life…

A: Suppose the initial amount of sample be Ao After 119 days, amount remaining, A = (1/21) Ao The…

Q: Iodine-125 emits gamma rays when it decays time Tellurium-125 and has a half-line of 60 days. If a…

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas…

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. How…

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

Q: Ca-60 is used extensively in radiotherapy, its half-life is 5.27 years. How many years will it take…

A: The given data is as follows: The half life Co-60 = 5.27 years The initial amount A∘= 100 The left…

Q: Phosphorus-32 (3215P) decays by beta emission and it has a half-life of 14.3 days. Determine the…

A: Answer - The correct option is (A) 5.2 x 104 Ci

Q: Selenium-82 undergoes double beta decay: 82 Se 34 → Kr + 2 je + 27 This low-probability process…

A: t12=3.5×1027sA=λNλ=ln2t12=0.693.5×1027=0.19×10-27s-1to calculate no. of atomno. of…

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.