used to treat thyroid cancer, decays with a first-order half-life of 6.99 × 105 s. How long does it take for the amount of isotope in a dose to decay to 19.0% of its initial value?

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

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Q: dN dN, -k,N, ve dt = k;N, – k,N, dt

A: Radioactive decay: The spontaneous breakdown of atomic nucleus with mass and energy release.

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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

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

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Q: The radioisotope 32Pdecays by 1st-order kinetics and has a half-life of 14.3 days. How long does it…

A: The answer is given as follows

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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 }

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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…

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

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Q: The archeologist discovered the carbon-14 was 90.0% decayed. The rate constant is 1.24 x 10-5 hr-1.…

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Q: 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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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.