A 10 g sample of a radioactive element takes 16.21 mins to reduce into 6 g. Calculate the half-life and identify the element.
Q: A nucleus of radius 3.26 fm contains 10 neutrons. Identify the element by name (not symbol). Use…
A: Given : Radius of nucleus (R) = 3.26 fm No. of neutrons (N) = 10
Q: A radioactive series consists of two different radioactive materials. One radioactive material with…
A: Given that: Decay constant of parent nucleus = k1 Decay constant of daughter nucleus = k2 y1(0)=a…
Q: After 2.14 days, the activity of a sample of an unknown type radioactive material has decreased to…
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Q: A sample of radioactive material contains 1x 1014 atoms and has an activity of 6.3 x 1011 Bq. What…
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Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…
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Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…
A: Given. t/T = 2 N(t) = No(1/2)t/T
Q: A radioactive sample is observed for 160 days. After 160 days the amount of the sample is found to…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The rate at which this…
Q: The half-life of radon-222 is about 3.823 days. (a) Determine the decay constant for radon-222. s -1…
A: Given data: The half life of randon-222 is t1/2=3.823 days=330307.2 s Part a: The expression for…
Q: The radioactive isotope 209 Po has a half-life of 103 years. How long would it take 84 for only 4.00…
A: Given: The half-life time is 103 years. The remaining sample is 4 g. The total amount of the sample…
Q: A certain isotope has a half-life of 6.4 h and an atomic mass of 87.29 u. What will the activity in…
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Q: A radioactive sample is observed for 5 days. After 5 days the amount of the sample is found to be…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The rate at which this…
Q: Mantles for gas lanterns are made of thorium, because it forms an oxide that can survive being made…
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Q: A radioactive sample containing approximately 6.52×10¹3 radioactive nuclides has a half-life of 5730…
A: Radioactive nuclides are those nuclides that are unstable. This happens due to the mismatch between…
Q: half-life of the isotope of iodine I-131 is 8 days. The activity of the sample at the moment is…
A: 1 Ci = 3.7 × 1010 decay/s Half life T1/2 = 8 days = 8 × 24 × 60 × 60 s = 6.912 × 105 s Rate of…
Q: The half-life of a particular element is 330 days. What is its decay constant?
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Q: Suppose Radon gas is trapped in a basement after renovations. The half life of radon gas Is 3.8235…
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Q: 5. (P19) A nucleus of element 114 is produced by fusing calcium - 48 with plutonium-244. Write the…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: opper-63 has a nucleus mass of 62.92959 u. Its atomic number is 29, and its atomic mass number is…
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Q: In a lab a radioactive sample is studied for 5 days. It was observed that the radioactive nuclides…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The decay process is…
Q: A radioactive sample studied in a lab is found to have a half-life of 48 hours. If the initial…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The half-life for a…
Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…
A:
Q: Use the equation for radioactive decay and solve for an algebraic expression for the time, “t” in…
A: Heavier nucleus are unstable. This is because there is increase in number of protons. This increase…
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: The half-life of a radioactive isotope is known to be exactly 1 h. a) What fraction of a sample…
A: Given in question - Half-life (T) = 1 hour Solution: Step1 - Here we will understand the concept…
Q: A sealed box containing alloys of metal A and Metal B consisting of the same parts accordingly.…
A: We need to find the age of the alloy based on the given information.
Q: A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 0.8 kg sample…
A: Approach to solving the question: Detailed explanation: Examples: Key references:
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 radioactive sample is prepared; 10.78 hours later, only 1/16th of the original sample remains.…
A: Activity N=N0e-λt 10.78 hours later, only 1/16th of the original sample remains N016=N0e-λ10.78…
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: What is the half-life of a radioactive isotope if the activity of a sample drops from 6,080 cpm to…
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Q: A radioactive sample studied in a lab is found to have a half-life of 25 hours. If the initial…
A: Radioactive decay is the process by which an unstable atomic nucleus spontaneously emits particles…
Q: A 5 g sample of a radioactive element takes 102 days to reduce into 3 g. Calculate the half-life and…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
- Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to a mismatch between the number of neutrons and protons. Only a few configurations of neutrons and protons are stable.
- This decay will be exponential in nature and is given by,
Here N0 is the original number of radioactive nuclei present, t is the time, and t1/2 is the half-life of the radioactive sample. This is known as the exponential law of radioactive decay.
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- As a staff scientist at a nuclear power plant, it is your job to understand radioactive substances used by your co-workers. In a particular radioactive sample, you found that the number of nuclei decreased to one-sixth the original number of nuclei over an 18 d period. Determine the half-life of the sample (in days).Solve problem 17 by using equation (2,2) and the k value determined by solving 16.Determine the nucleus density (in kg/m3) of the following four isotopes.4He (m = 4.00260325415 u) = 2.307e17 kg/m^321Ne (m = 20.99384668 u) = ______ (CANNOT BE 2.99328e17 kg/m^3)186Tl (m = 185.97833 u) = ________ (CANNOT BE 2.9946e13 kg/m^3)231Pa (m = 231.035884 u)= _____ (CANNOT BE 3.624e-13 kg/m^3)
- Radon gas has a half-life of 3.83 days. If 3.28 g of radon gas is present at time t = 0, what mass of radon will remain after 1.40 days have passed? Answer: __________ gramsThe radioactive isotope of lead ^209Pb decays according to the differential equation dN/dt=-kN. The isotope has a half-life of 3.3 Hours. If 1 gram is presented initially, how long will it take for 78% of the lead to decay?A sample of radioactive material has a half-life of 12 hours. If the initial sample contained 6.2x10¹3 radioactive nuclides estimate the number of radioactive nuclides present in the sample after 5 hours.
- A sample of plutonium-239 has a mass of 24.0 mg. If after 72300 years 6.00mg are left, what is the half life of this isotope?An 8 g sample of a radioactive element takes 8.42 million years to reduce into 2 g. Calculate the half-life and identify the element.The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours. Calculate the half-life of the nuclide.