The rate constant for the decay of a radioactive element is 1.95 × 10⁻³ day⁻¹. What is the half-life of this element in days?

Q: Two carbon atoms present in the fossils are used to calculate the age of the fossils bones (and, in…

A: The half life of C-14 is given as 5730 yrs that is, the number of atoms of C-14 present initially…

Q: 9. A sample of a compound is found to have a half-life of 14.65 seconds. Answer the following…

A: Given:  The half life of the compound = 14.65 seconds

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

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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: At an archaeological site, several well- preserved items made from wood were found. The carbon-14…

A: The objective of this question is to determine the age of the wooden items found at an…

Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 15.0% of…

A: Rate constant is 9.05×10-4 s-1 Let consider Initial concentration = 100 M Final concentration = 100…

Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 12.5% of…

A: The speed of the reaction can used to measure the rate of the reaction.The rate of the reaction is…

Q: 1311, used to treat thyroid cancer, has a first order half-life of 6.99 × 105 s. How long does it…

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

Q: Calculate the half-life (in minutes) for a radioactive substance which loses 42.5% of its original…

A: After 1 hour it loses 42.5% of its original intensity, which means after 1 hour 57.5% of the…

Q: Niobium-89 decays through beta decay to produce yttrium-89 in a first order process with a half-life…

A: Half life time is a time to consume half of initial concentration of any reactant. Denoted by t1/2.…

Q: The first-order rate constant for radioactive decay of 131^l is equal to 8.642 x 10-2 day-1. Find…

A: Given : first order reaction Tip: apply decay equation

Q: Consider the radioisotope 226Ra (half life 1.03 x 10^5). What is the first order rate constant for…

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Q: 1. Deoxyglucose labeled with 18F is commonly used in PET scan to locate tumors. The half-life of 18F…

A: In this question, we want to determine the time for the level of 18F in the body when it's drop from…

Q: 2)The reaction A(aq) ---> B(aq) + C(aq) is a reaction of order one. The half-life of A(aq) is 91.7 s…

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Q: How are the rate constant and the half-life related?

A: The rate constant and the half-life of various order reactions are, In the above equations, rate…

Q: Consider the radioisotope ⁹³Mo (half life = 4.00 × 10³ years). What is the first order rate constant…

A: For first order reaction:  Rate constant, K = 0.693/t1/2  t1/2 = Half-life

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 first-order decay of thallium-201 is used to image heart muscle in patients with suspected heart…

A: The half-life of the thallium-201 is = 73 h The percent reactivity of the thallium-201 after 48 h is…

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: A reaction was found to have a rate constant of 8.50 × 10–5 M s–1 and has a half-life of 2.5 hours.…

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Q: The decomposition of ethane, C2H6, to methyl radicals has a rate constant of 5.36 x 104 per second…

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Q: A first order decomposition reaction has a half-life of 60.1 yr. What percentage of the original…

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Q: Tritium 3H is a radioactive isotope of hydrogen which has a first-order half-life of 12 years. On…

A: Provided half life (t1/2)= 12 year Provided time(t)= 10 years Let initial amount of Tritium=[A•] Let…

Q: 23.)  A certain reaction has the rate law rate = k[A] with a half-life of 18.5 hours. If the…

A: We can confirm order of any reaction from it's rate law as it is determined experimentally . Here…

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: normal

A: In given question half life independent of the amount of the starting substance means it is a first…

Q: A reactant decomposes with a half-life of 197s when its initial concentration is .279 M. When the…

A: The rate law of a chemical reaction gives the dependence of its rate on a rate constant "k" and the…

Q: A chemical exposure occurs by ingestion. The dose is absorbed very quickly into the bloodstream, so…

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Q: 1. The first order rate constant for the decomposition of N205, according to the reaction: 2 N2O5(g)…

A: Reaction given2N2O5 (g)→ 4 NO2(g) + O2(g)k = 6.82 ×10-3 s-1N2O50 =  0.0250 moles / 2 L = 0.0125 M

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

A: Yes, The gases are being decomposed, so their partial pressure is decreasing. The partial pressure…

Q: A certain signal molecule S in muscle tissue is degraded by two different biochemical pathways: when…

A: The formula for half-life of parallel decay is given by   Where, t1/2 combined = half life when both…

Q: The rate constant for the decay of a radioactive element is 6.70 × 10⁻³ day⁻¹. What is the half-life…

A: Half life is the time taken for a radioac Radioactive decays are first order reaction.

Q: I was given the below function to describe the half life radioactive decay: N(t)=N0e-kt Where N(t)…

A: half-life(t1/2) of a radioactive decay is the time required to bring down the amount of radioactive…

Q: Reaction Kinetics and Dimensional Analysis (a) Consider an example first-order reaction of the…

A: A) A first order reaction is given above  where A is the reactant which gives the two products B and…

Q: Tritium,3 1 H , an isotope of hydrogen has a half-life of 12.33 years. Its decay constant in years-1…

A: Halflife of Tritium , t1/2 = 12.33 years Decay constant , k = ?

Q: A given compound decomposes with a half-life of 8.0 s and the half-life is independent of the…

A: We have to calculate the time taken.

Q: The rate constant for the decay of a radioactive element is 4.18 × 10⁻³ day⁻¹. What is the half-life…

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Q: Scientists working in Lake Apoka calculating half-lives of pollutants called volatile organic…

A: Given that the half-life (t1/2 ) is 37.3 days and the concentration ([A]) is 0.835 M at that time.

Q: Elements heavier than uranium in the periodic table do not exist in any appreciable amounts in…

A: Elements below uranium have short half lives yet they exist in nature whereas higher elements do…

Q: the half-life of radium 226 is 1620 years. how many hours will it take for a 5g sample to decay to…

A: The radioactive decay is a first order reaction. Since we know that the relationship between the…

Q: Geologists can estimate the age of rocks by their uranium-238 content. The decay of U-238 is…

A: The question is based on the concept of chemical kinetics. we need to calculate age of the given…