09:1 g of medium is reduced by 2.1 mg in 5 years by a-decay. Calculate the half life period of radium.
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A: Given: The half life time of thorium is t1/2=1.405×1010 y. The mass of thorium in lantern is m=300…
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A: Given t0.5 = 1.6 ×103 yr No=11.3uCi and we need to find difference in decay rate and…
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Q: %3D Given: m° Find: m 2. A fission reaction in the release of a treme how much was is the I Given:
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Q: Half-life of radioactive element 13153I is 8.0252 days. (A) Its decay constant, λ (B) Percentage…
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Q: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…
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Q: Example 12.11. Radioactive isotope 18 F has a half-life of 110 min. How much time does it take for…
A: Half life of radioactive isotope of 18 F , t1/2=110 min To determine time does it take for 99% of…
Q: Problem B The decay rate of a radioactive source decreases by 39% in 97 h. Determine the half-life,…
A: We can use the equation for radioactive decay:N(t) = N0 * e(-t)N0 is the initial amount of…
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A: Solution. a). The alpha particle has atomic mass z =2 and atomic weight 4. When uranium decay by…
Q: 3065Zn decays via ββ+ and EC (electron capture). Estimate the half-life of the fully ionized Zinc…
A: Zn-65 disintegrates by an electron capture to the 115keV excited level and by electron capture and…
Q: radioactive sample initially undergoes 12.0×10^4 decays/s. Twenty-four hours later, its activity is…
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Q: An 10 g sample of a radioactive element takes 5432.6 years to reduce into 1 g. Calculate the…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
Q: Consider a pure 4.0g sample of radioactive gallium-67. If the half-life is 78 h, how much time is…
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Q: Plutonium has a decay constant of 2.75 × 10-16 s-1. Activity of 1 g of sample will be 0.678x106 Bq.…
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Q: the sample must be due to radioactive decay. With all of this in mind, if we find that a rock…
A: This problem can be solved using radioactive decay concept.
Q: Tritium has a half-life of 12.5 y against beta decay. Determine fraction of a sample which will…
A: (1) We have given Th=12.5 years Here Th= half life We know that NNo=12tTh NNo=122512.5=122=14 N=No/4…
Q: A loaded penguin sled weighing 68.0 N rests on a plane inclined at angle 9-20.0° to the horizontal…
A: The free body diagram is shown below
Q: A radioisotope has a half-life of 5.00min and an initial decay rate of 8000 Bq. (1.) What will be…
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Q: Tritium has a half-life (half-life) of 12.33 years. In a sample of tritium, what percentage of 3H…
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Q: Plutonium-238 (238Pu) is a radioactive isotope with a half-life of 87.7 years. If a sample of 238Pu…
A: Given Half life=87.7year Activity after the=438.5year
Q: A radioactive substance has a half-life period of 30 days. What is the disintegration constant?
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Q: If 16 g of radon with a half-life of 4 days is present in a balloon at t = 0, what is the mass of…
A: Most of the nuclei present are unstable in nature. They try to gain stability by disintegrating…
Q: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…
A: Hlf-life time of radioactive element is Mass of element is Note:Molar mass of is Avogadro's number…
Q: Problem 9: 235U is the rarer of the two most common uranium isotopes. Most uranium is 238U.…
A: a)
Q: In a piece of rock from the Moon, the Rb content is assayed to be 1.89×1010 atoms per gram of…
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Q: 29) Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount…
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Q: Cadmium-107 has a half life of 6.52 hours. If you start off with sample which has an activity of 1.0…
A: The reactivity of the sample after time t is given by:
Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.90 billion years old by…
A: Given, Half-life of U238 is 4.47 ×109 years
Q: A 10 g sample of a radioactive element took 12 days to reduce into 1 g. Calculate the half-life and…
A: Some configurations of protons and neutrons inside a nucleus are unstable. When an atomic nucleus is…
Q: The rate of spontaneous fi ssion in 238U is 6.7 decays per second for each kg of uranium present.…
A: Given,rate of spontaneous fission in 238U R= 6.7 decays per second
Q: Tritium has a half - life of 12.33 years. What fraction of the nuclei in a tritium sample will…
A: Formula to calculate the fraction of remaining sample after 5.00 yr. is,
Q: Tritium has a half-life of 12.33 years. What fraction of the nuclei in a tritium sample will remain…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subpartsfor…
Q: The half life of 60CO is 5.7 years. Find the activity of 3.54 milligram of 60Co. Give your answer in…
A: Answer is (1.37 x 1011 )decay /second (Bq). Explanation is in next step.
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