A radioactive sample has a decay constant of 2.97 x 10 s¹¹. Estimate the half-life.
Q: A radioactive material produces 3.522E+3 decays per minute at one time, and 5.47 h later produces…
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Q: λ =
A: Deacy of an unstable atom is defined by the radioactive decay law. It states that the probability…
Q: The half-life of a particular element is 330 days. What is its decay constant?
A: The relationship between Half life t1/2 and decay constant λ is t1/2=ln2λ=0.693λ where ln2 is…
Q: After how many half-lives will (a) 10.0%, (b) 5.00%, and (c) 1.00% of a radioactive sample remain?
A: Formula to calculate the number of half-lives is,
Q: Atts, you have a pure sample of an unknown substance. At t= 293 s, 36.8% of the substance remains.…
A: Radioactive substance remaining at t=293s, N=36.8100×N0=0.368N0
Q: Material found with the body had a C-14 activity of about 0.215 Bq per gram of carbon, where the A0…
A: The half life is t1/2=5730 yrs
Q: Estimate the decay constant of a radioactive sample that has a half-life of 50 years.
A: Radioactive decay is the process by which unstable nuclei will decay into stable ones by emitting…
Q: The isotopes of U8 and U5 occur in nature in the ratio 140 : 1. Assuming that at the time of earth's…
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Q: If a 3.16-g sample of an isotope having a mass number of 135 decays at a rate of 0.530 Ci, what is…
A: Given Mass of Isotope = 3.16 gram = 3.16×10-3 Kg Mass Number = 135 Rate of decay = 0.530 Ci As…
Q: Radium-224 undergoes alpha decay with a half-life of 3.66 days. (a) Calculate the binding energy of…
A: Hey there, since your question as multiple subparts. We have solved the first three for you…
Q: Use the values from PRACTICE IT to help you work this exercise. (a) Find the number of remaining…
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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 main dangerous radioactive material left over after the Chernobyl disaster is Caesium-137. The…
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Q: the decay constant or the beta decay of ^99 43Tc was found to be equal to 1.0x10-13/s. What is the…
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Q: Find the number of atoms in the sample after 10 days.
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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: The decay constant of a radioactive source is 752 per year. Then its half- life equals: *
A: Step:1 The Time taken for a radioactive atom to disintegrate to half of its original…
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: The half-life of a particular element is 330 days. What is its decay constant?
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Q: After a certain nuclear reaction, radioactive sodium is found with half life of 14.8 hrs. compute…
A: To find- λ=?Given-(T) of Na=14.8 hrs
Q: The nuclide 10,4 Be undergoes spontaneous radioactive decay to 10,5 B with emission of a beta…
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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: A sample of radioactive material is studied in a lab and is found to have a decay constant of 100 ×…
A: When an atomic nucleus becomes unstable they become stable by radiating energy this process is known…
Q: The Half-life of certain radioactive sample is 30 minutes. At 2.00 PM, the decay rate is measured to…
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Q: After long effort, in 1902 Marie and Pierre Curie succeeded in separating from uranium ore the first…
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Q: A nuclide whose "generic" symbol is 6430X would have protons and neutrons.
A: The generic symbol of a nuclide is given as X3064.
Q: A sample of carbon of mass 6.74 g taken from an animal jawbone has an activity of 4.00 decays/min.…
A: Given that the 6.74 g of carbon taken from the jawbone. The no. of moles in 6.74 g of carbon be…
Q: What is the Decay Rate (k), if the Half Life is 10.5 days?
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Q: The magnitude of the rate of decay of a radioactive material is 0.47 times the square of the amount…
A: Note: answer and explanation is given in step 2 in image format..
Q: Based on data acquired during a radioactive decay lab using an unusual assortment of geometrically…
A: The trendline equation for radioactive decay can be expressed as: N(t)=No×e(-λt) where: N(t) = the…
Q: Marie and Pierre Curie managed to extract 1 mg of radium from ten tonnes of uranium ore in 1898. The…
A: The decay constant for radium-226 can be calculated using the following formula: λ = ln(2)/ t½ Where…
Q: A radioactive material produces 4.386E+3 decays per minute at one time, and 7.57 h later produces…
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Q: Tritium (half-life = 12.3 yr) is used to verify the age of expensive brandies. If an old brandy…
A: The amount remaining is equal to the original amount times 1/2 raised to the of half-lives that have…
Q: How many half-lives must elapse until (a) 77% and (b) 99 % of a radioactive sample of atoms has…
A: Solution in answer, feel free to ask for clarifications if needed.
Q: A radioactive sample has a half-life of 28 mins. If the initial amount of sample was 2 g, estimate…
A: Radioactive decay takes place when an atomic nucleus becomes unstable. The rate of decay is known as…
Q: A 10 g sample of a radioactive element takes 16.21 mins to reduce into 6 g. Calculate the half-life…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
Q: The half-life of a radioactive isotope is 140 d. How many days would it take for the decay rate of a…
A: Given that, Half life of the isotope, T = 140 days We know that, The half life is the time in…
Q: A pure sample of a newty discovered radioactive isetope is discovered. I has a halt-ife of 59 min.…
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Q: After 85 years, 80 % of a radioactive material decays. What is the half-life?
A: Given, Time,t=85yrs=85×3.154×107sPercentage of the material decay= 80% We have the expression for…
Q: If it is known that 87% of an initial radioactive sample remains after 3 days, what is the decay…
A: Given: The amount of radioactive decay is 87% of the initial amount. The time is 3 days.
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