The first-order radioactive decay of iodine-131 exhibits a rate constant of 0.138 d−1. What is the half-life for this decay?

Q: Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive decay…

A: Half-life of americium-241 is 432.2 years Therefore, time = 3×432.2 years = 1296.7 years

Q: If the decomposition of reactant A follows first-order kinetics, what concentration of A remains if:…

A: By using all this we can find the remaining concentration of reactant .

Q: The Hydrogen isotope, tritium, is radioactive and has a half-life of 12.5 years. What percentage of…

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Q: The rate constant for the decay of a radioactive element is 2.03 × 10⁻³ day⁻¹. What is the half-life…

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Q: 2) The radioactive decay of 14C is a first order process with a half life of 5730 years. If the…

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Q: It was found that 60.4% of hydrogen peroxide degraded at 300 K in 75 minutes. Given that the…

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Q: Consider a radio active material with a half-life time of 30 years following first order reaction.…

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Q: The radioisotope tritium decays with a first-order rate constant k of 0.056 year−1.  What fraction…

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Q: The rate constant for the decay of a radioactive isotope is 3.1x 103/day. What is the half-life of…

A: Given is a radioactive isotope with rate constant = 3.1×10–3/day . We need to find the half life of…

Q: Radioactive decay is a first order process. If the half-life of 222Rn is 3.8 days, approximately how…

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Q: What percentage of the radioactive iodine-131 will be left after 25 days if its decomposition…

A: In first-order kinetics, the rate of reactions of chemical reactions are dependent on one of the…

Q: The radioactive decay follows first-order rate law and for the radioisotope, Sr-90. its half-life…

A: Given: t12=28 years% of sample decompoed=87.5% To find Time for sample to decompose

Q: The rate constant for the decay of a radioactive element is 1.88 x 103 day1. What is the half-life…

A: Given that the decay constant of radioactive element is 1.88×10-3 day-1 To determine the half-life…

Q: Match the half-life to the rate constant assuming that the initial conce k = 0.5 M/s k = 0.5/ (M s)…

A: A) k = 0.5 M/s From the unit of rate constant, it is zero order reaction.  half life = Ao/2k   =…

Q: What is the half life for the first order decay of phosphorus-32? The rate constant for the decay is…

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Q: The half-life of radium-226 is 1.60x103 yr. How many hours will it take for a 5.00-g sample to decay…

A: Given: Initial mass of radium = 5.00 g Final mass of radium remaining = 0.185 g And half life of…

Q: Iodine-131 is used to treat tumors in the thyroid. Its first order half life is 8.1 days. If a…

A: Decay of I-131follow 1st order kinetics λ (decay constant) = 0.693/t1/2 = 0.693 / 8.1 days = 8.56…

Q: The rate constant for the decay of a radioactive element is 2.44 x 10 ^-3 day^-1. What is the…

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Q: The rate constant for the decay of a radioactive element is 1.76 × 10⁻³ day⁻¹. What is the half-life…

A: Rate constant = 1.76×10^-3 day^-1 Decay of radioactive element is first order reaction

Q: Iodine-131 is a radioactive isotope that is used to diagnose and treat some forms of thyroid cancer.…

A: The give radioactive decay is of first order with rate constant of 0.138 d-1 To find the time…

Q: Given the following data, determine the order of the reaction with respect to Cl,.

A: Let us consider  Rate = K[NO]m[Cl2]n Here ,m is order with respect to NO      And n is the order…

Q: How many half-lives will it take for the concentration of the N20 to reach 50.00 % of its original…

A: decomposition of N2O is first order reaction  for first order reaction , we can write  N = N0 / 2n…

Q: The half-life of a chemical substance is 5 days. How long does it take for 1.3 Kilograms of the…

A: For first order  t = 1/K × { ln Co/Ct }

Q: The half-life of Cobalt-60 is 5.3 years. What is the value of the rate constant of Cobalt-60 in 3…

A: Radioactive decay follow first order kinetics. For first order reaction  Rate constant = 0.693/half…

Q: 22. The half life of a first order reaction is 1 year. What is the time taken for 75% of the…

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Q: What is the first-order rate constant for its decay?

A: Relationship between t1/2 and k in first order reaction :-  t1/2 = ln 2/k  Or  t1/2 = 0.693/k  k is…

Q: The radioactive nuclide 63Ni decays by a first-order process via the emission of a beta particle.…

A: Given data: Half life = 160 years Now by using relation between rate constant and half life of 1st…

Q: What is the first order rate constant for ²⁴⁰Pu?

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Q: What is the half-life (in y) for the first-order decay of argon-39? 3918Ar → 3919K + e− The rate…

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Q: Since radioactive decay is a first-order process, the decay rate for a particular nuclide is…

A: Molar mass of KCl = 74.55 g /mole Mass of KCl = 1 g Moles of KCl = MassMolar mass=1 g74.55…

Q: What is the half-life for the first-order decay of phosphorus-32? (P – decay is 4.85 x 10-2 day¬!.…

A: Given- Rate constant for the decay, k = 4.85 × 10-2 day-1Order of reaction = 1st order To find- The…

Q: The decomposition of a radioactive isotope follows first order rate law kinetics. Calculate the…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive decay…

A: Given: Rate constant k = 0.011 day-1 Initial concentration = 1.00 mg

Q: The radioactive isotope 32P has a half-life of 14.3 days. If a sample contains 0.884 g of 32P, what…

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

Q: 5. The half-life of 4Po is 0.16 s. How long would it take to reduce a sample of it to the negligible…

A: In a chemical reaction, the half-life (t 1/2) of a species is the time it takes for the…

Q: The radioisotope 1"C (half life = 5730 years) is used for carbon dating. What is the first order…

A: Given :- half life of radioactive 14C i.e. t1/2 = 5730 years  To calculate :- value of first order…

Q: The radioactive nuclide 63Ni decays by a first-order process via the emission of a beta particle.…

A: Radioactive Decay :  It is the process by which an unstable nuclei of an atom loses its energy by…

Q: 146Pm decays via first-order kinetics (as do all radioactive isotopes) and has a half-life of 5.53…

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Q: Radioactive decay occurs following first order kinetics. If the half-life of a sample of Cl-36 is…

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Q: The isotope strontium-90 is one of the extremely hazardous species in the residues from nuclear…

A: First order reaction- the reaction whose rate is depends on only single reaction whose concentration…

Q: 37.  What is the half-life for the first-order decay of carbon-14? (614C⟶714N+e−) The rate constant…

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Q: O3Ni decays by a first-order process via the emission of a beta particle. The 63NI isotope has a…

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Q: Radioactive Decay is a first order process. In 1911 , maria curie prepared a n international…

A: Radioactive Decay is a first order process. In 1911, Maria curie prepared an international…

Q: What percentage of the radioactive iodine-131 will be left after 25 days if its decomposition…

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Q: The half-life period of two samples are 0.1 and 0.4 seconds. Their initialConcentrations are 200 and…

A: The amount of time required by a sample to reduce its initial concentration by half is termed as…

Q: The rate constant for the decay of a radioactive element is 3.17 x 10-³ day¹. What is the half-life…

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Q: The rate law describing the decay of a given isotope (Q) is: rate = 0.218 hr-1 [Q] What is the…

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Q: The rate constant for the decay of a radioactive element is 6.66 x 10-3 day-. What is the half-life…

A: Given- Rate constant for the decay of a radioactive element= 6.66×10-3day-1

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.