2) The radioactive decay of 14C is a first order process with a half life of 5730 years. If the living wood gives 15.3 disintegrations per minute per gram, and a wooden bowl found in an archeological dig gives 6.29 disintegrations per minute per gram, how old is the bowl?

Q: The first-order radioactive decay of iodine-131 exhibits a rate constant of 0.138 d−1. What is the…

A: Like chemical reactions, nuclear reactions are type of chemical reaction only but here in place of…

Q: What is the half-life for the first-order decay of carbon-14? (C-"N+e) The rate constant for the…

A:

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

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

A: The half life (t1/2) of zero order reaction is given by the formula  t1/2 = [R]o / 2K [R]o = Initial…

Q: Carbon-14 has a half-life of 5720 years and this is a first order reaction. If a piece of wood has…

A:

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

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Q: The half-life for the (first-order) radioactive decay of 14C is 5730 years (it emits beta rays with…

A: Using the given half-life period, rate constant, k can be determined.…

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

A:

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: 6) Radioactive substances decay by first-order kinetics. How many years would be required for a…

A: By using the formula for First order kinetics we can solve this problem.

Q: Tritium is radioactive and decays by a first order process with a half-life of 12.5 yr. If an…

A:

Q: 4. (a) The radioactive isotope 32P has a half-life of 14.3 days. If a sample contains 0.884 g of…

A: Half life of P-32 isotope = 14.3 days = 1235520 sec 22 days = 1900800 seconds

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: 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: 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: 140Ba decays via first-order kinetics (as do all radioactive isotopes) and has a half-life of 12.75…

A:

Q: Another radioisotope of iodine, ¹³¹I, is also used to studythyroid function . A patient isgiven a…

A: The Radioactive decay of ¹³¹I follows a first order kinetics. The half life for a first order…

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: The half-life of the radioactive element plutonium-239 is 25,000 years. If 16 grams of plutonium-239…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

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: The radioisotope ¹⁴C (half life = 5730 years) is used for carbon dating. What is the first order…

A: Rate of reaction- The concentration change of designated species (products or reactants) per unit…

Q: A radioisotope of technetium is useful in medical imagingtechniques. A sample initially contains…

A: The rate constant for the decay is calculated as shown below where [A]o is the initial amount and…

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

A:

Q: Radioactive decay follows first-order kinetics. If sodium-24 has a half-life of 14.96 hours, what is…

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Q: E) 130 s 7 The nuclide W decays by a first-order process witha rate constant of 1.0 x 10 d How long…

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Q: The rate constant for the decay of a radioactive element is 2.55 × 10-3 day-1. What is the half-life…

A: Given data,rate constant=2.55×10-3day-1

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

A:

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

A:

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: Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of the isotope is 2.7…

A:

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: 3. The rate constant for the reaction of A₂ → 2A is 5.72 x 10⁰ a. If the initial concentration of A₂…

A:

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: The half-life for the radioactive decay of C-14C-14 is 5730 years. If a sample of C-14C-14…

A: For a radioactive decay rate constant K and half life t12 have the following relation. t12=0.693K…

Q: If the amount of radioactive sodium-24, used for studies of electrolytes within the body, in a…

A: Initial amount = 0.8 mg Final amount = 0.1 mg Time T = 45 h

Q: If the half life of hydrogen peroxide is 949 sec and you started with 3M H2O2, how much hydrogen…

A: The decomposition of H2O2 in aqueous solution follows first order reaction kinetics. When rate of a…

Q: Radioactive iodine-131, used in radiotherapy to treat cancer, has a first-order half life of 8.0…

A: Given that : Half-life of iodine-131 = 8.0 days We have to determine the time it take for 15% of the…

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

A:

Q: what is the value of the rate constant, k in s-1?

A: Given :- t1/2 = 3.0 × 105 years  To calculate :- k (in s-1)    t1/2  = 0.693/k  So, k = 0.693/t1/2

Q: The rate constant for the decay of a radioactive element is 2.76 × 10-3 day1. What is the half-life…

A: When an unstable nucleus loses their energy by the radiation is known as radioactive decay.

Q: 8. Determine the half-life of an anti-hypertensive'drug if it appears to be eliminated from the body…

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Q: 4. The fluorine-18 isotope is radioactive (decays by positron emission). It is used in in the form…

A: Radioactive decay follows first order kinetics, so radioactive decay has rate law similar to that of…

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

A:

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: Suppose you start a chemical reaction with 23 moles of hydrogen peroxide, and that after 5 minutes…

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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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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.