3.7. The radioactive nuclide Co has a half-life of 5.27 years. Calculate the mass of Co that remains from 0.0100g sample of the nuclide, after 1.00 year has elapsed.

Q: The half-life of strontium-90 is 28.0 years. How many grams of this nuclide in a 4.60-g sample will…

A: Half-life time t12=0.696k;   k is decay constantandt=1kln(m0m)m0 is mass of at time t=0m is mass of…

Q: The half-life of 26?? 59 is 44.6 days. How long will it take for 95.0% of a sample of this nuclide…

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Q: How much time in years (assume a 365 day year for each year) would it take for a 1.805 g sample of…

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Q: The nuclide 241Am is used in smoke detectors. As it decays (with a half-life of 458 years), the…

A: Radioactive decay follows the first order kinetics and every radioisotope has distinct…

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: The Radioactive decay follows first-order kinetic and thereby its formulae. As we know, t1/2 × k =…

Q: What fraction of the mass of a single 238U is destroyed in the decay? The mass of 234Th is…

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Q: Selenium-73 decays by positron emission with a half-life of 7.15 hours. What mass remains from a…

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Q: Tritium, H, is more commonly known as fusion fuel but is itself relatively unstable, with a…

A: Unstable nuclei undergo radioactive decay process by the emission of highly energetic particles ,…

Q: What is the half life of a radioactive sample , if 3/4 of its nuclei decay in 2 years ?

A: Given:The amount of nuclear decay in 2 years = ¾ th of initial massAssume that the initial mass =…

Q: 3) 120g of Chromium-48 decays. After 6 half-lives, how much of the original nuclei would remain?

A: Given,  Initial amount of Chromium - 48 is 120g. After 6 half lives the original nuclei would remain…

Q: 1. Rubidium-87 is a radioactive isotopes ocurring in natural rubidium. The decay constant is…

A: 1- We will determine first the half life in second unit :  We know that, Half life equation for…

Q: What is the half‑life of an isotope that decays to 6.25%6.25% of its original activity in 57.1 h?

A: The half-life of the isotopes can be described as the time at which the amount of the activity…

Q: The isotope of iodine with mass number 128 undergoes beta decay with a half-life of 25.00 minutes.…

A: As the iodine undergo radioactive decay , it obey first order reaction . By using the half life…

Q: The half-life of tritium is 12.3 years. If 48.0 mg of tritium is released from a nuclear power plant…

A: Given data contains, Half-life of tritium is 12.3 years Mass of tritium is 48.0 g Time t is 5.0…

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.80 billion years old by…

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Q: A radioactive substance has a ​half-life of 437 years. What is its decay​ rate?

A: Radioactive Decay: Radioactive decay is the property of the several naturally occurring elements as…

Q: Ten grams of the plutonium isotope 239Pu were released in a nuclear accident. How long will it take…

A: Step : 1               How long will it take for the 10 grams to decay to 1 gram?

Q: The isotope 100 Tc has a half life of 16 sec, what is the radioactive decay constant, k?

A: Given: Half life of isotope 100Tc = 16sec As all radioactive process are first order reactions using…

Q: A The balf-life of barium-131 is 12 days. How many grams remains after 60 days if the initial sample…

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Q: A radioactive isotope of vanadium, ⁵³₂₃V, decays by producing a β⁻ particle and gamma rays. The…

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Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by…

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

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

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Q: Radium-221 has a half of 30 sec. How long will it take for 82% of a sample to decay?(Round your…

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Q: The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 × 109…

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Q: A chemist wishing to do an experiment requiring "c (half-life = 4.5 days) needs 7.0 ug of the…

A: GIVEN:-

Q: 2P is a radioactive isotope with a half-life of 14.3 days. If you currently have 13.5 g of ²P, how…

A: The given data contains, t1/2 =14.3 daysPt=13.5 gP0=7 days

Q: The radioactive nuclide 60Co as a half-life of 5.27 years. Calculate the mass (in g) of "Co that…

A: Formula: N=Noe-λt

Q: The common isotope of uranium, 238 U, has a half-life of 4.47 x 109 years, decaying to 234 Th by…

A: All radioactive decay processes follow first order reactions. Calculating rate constant for first…

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5% of a…

A: Radioactive decay is associated with the emission of small energetic particles e.g. beta particles,…

Q: The nuclide 0 (atomic mass, 17.99916 u) is produced by the B* decay of F (atomic mass 18.00094 u).…

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Q: Cobalt-60, which undergoes beta decay, has a half-life of5.26 yr. (a) How many beta particles are…

A: Half life: It is the amount of time taken by a radioactive material to decay to half of its original…

Q: 28Mg lies above the band of stability- its most likely mode of decay is what?

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Q: The radioactive nuclide 2964Cu  decays by beta emission to 3064Zn  or by positron emission to Ni…

A: The nuclide C64u decays to Z64n by beta emission as follows:C2964u→Z3064n+β-10+νThe change in the…

Q: 239Pu is a nuclear waste byproduct with a half-life of 24,000 y. What fraction of the 239Pu present…

A: Given data, t1/2 of P239u = 24,000 yTime (t) = 1000 years To calculate the fraction of the 239Pu…

Q: 3.) The Radioactive nuclide co has a half-Life of 8.5 hours, 55 27 what mass of Co Temains from a.…

A: Mass of sample remains after 18 hours is       0.0045 g.

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.30 billion years old by…

A: Given: Age of rock = 4.30 billion years = 4.30 X 109 years Final mass of 238U remaining = 1.325 g…

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by…

A: Given: Half life of U235 , t1/2= 4.47x 109 yrsPresent time, t= 4.00 x 109 yrs mass of U238 = 1.430g

Q: Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. What is the activity of the…

A: The activity of a radioactive sample is measures as `N_0` counts per minute at. The activity of a…

Q: What is the half‑life of an isotope that decays to 3.125%3.125% of its original activity in 41.8 h?

A: All radioactive decay follows first order kinetics. The half-life t1/2 of the radioactive decay is…

Q: A radionuclide undergoes beta decay with half-life of 30.0 years. How many years will it take for 25…

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Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 91.3 g of ²P, how…

A: The answer to the following question is- half life = 14.3 days ,

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: A radioactive sample has a mass of 500 grams. How much remains after two half-lives?

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Q: Plutonium was detected in trace amounts in natural uranium deposits by Glenn Seaborg and his…

A: The age of the substance is calculated by using the following formula, t=1λlnntn0 Here n0 is the…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 2.5 g remain. What is the original…

A: Given :-  Amount of sample left after 120 years = 2.5 g  Half-life kf Cs-131 nuclide = 30 years  To…

Q: The most significant source of natural radiation is radon-222. Radon-222, a decay product of…

A: Answer a: How many alpha and beta particles are produced when uranium-238 decays to radon-222? What…

Q: The radioactive nuclide Co has a shelf-life of 17.5 hours. What mass Co remains from 0.0100g sample…

A: