Tritium, or hydrogen-3, is formed in the upper atmosphere by cosmic rays, similar to the formation of carbon-14. Tritium has been used to determine the age of wines. A certain wine that has been aged in a bottle has a tritium content only 71% of that in a similar wine of the same mass that has just been bottled. How long has the aged wine been in the bottle? The half-life of tritium is 12.3 y.

Q: All the very heavy atoms found in the earth were created long ago by nuclear fusion reactions in a…

A:

Q: 18.Examine the table.  Isotope Half-Life (yrs) Carbon-14 5.715x10^3 Plutonium-239 2.41x10^4…

A: Given that, The half-life of Carbon-14 is 5.715×103 years The half-life of Plutonium-239 is 2.41×104…

Q: a- The half-life of the radioactive nucleus Ra is about 1.6 x10 yr and the initial activity is…

A: Given t0.5 = 1.6 ×103 yr           No=11.3uCi  and we need to find difference in decay rate and…

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: Krypton-81m (81mKr) is a radioactive isotope with a half-life of 13.1 s that is often used in…

A: The correct option is (e) 50.26 s

Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…

A:

Q: Calculate the binding energy (in MeV) per nucleon for an α-particle (4He nucleus), given that the…

A: Since you have asked multiple questions we will solve first question for you.please post remaining…

Q: archaeologist sometime in the future analyzes the iron used in an old building. The iron contains…

A: half life of Ni -63  t/2 = 92 years LET x half life passed (N0 /2)X =( N0 / 128 ) = (N0 /2)7  X = 7…

Q: Half-life of radioactive element 13153I is 8.0252 days. (A) Its decay constant, λ (B) Percentage…

A:

Q: A radioactive isotope has an activity of 9.27x104 Bq initially. After 3.30 hours the activity is…

A:

Q: The radiocarbon content of 14C decreases after the death of a living system with a half-life of 5730…

A: The formula of the radioactivity is given below where, T is the half life, t is the time, Ro is the…

Q: Calculate the mass of a sample of (initially pure) 40K that has an initial decay rate of 1.70 * 105…

A: The initial decay rate,

Q: A pure sample of 226 Ra contains 2.0 x 10^14 atoms of the isotope. If the half life of. 226 Ra = 1.6…

A: Given that, No. of atoms of a pure sample of 226 Ra is 2.0 x 1014 atoms. The half-life of the sample…

Q: he isotope neptunium-229 ( 229 93Np) undergoes alpha (4 2He) decay. Write the reaction equation and…

A:

Q: A radioactive isotope has an activity of 9.34×104 Bq initially. After 3.10 hours the activity is…

A:

Q: 4. A radioactive sample, with an initial mass of 28 mg, has a half - life of 5 days. What is the…

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Q: Mass spectrometric analysis of potassium and argon atoms in a Moon rock sample shows that the ratio…

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Q: The steps below show three of the steps in the radioactive decay chain for 232 90Th. The half-life…

A: Given: The steps below show three of the steps in the radioactive decay chain for 232 90Th. The…

Q: The nuclide 10,4 Be undergoes spontaneous radioactive decay to 10,5 B with emission of a beta…

A:

Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…

A:

Q: The radioactive isotope 31Si has a half-life of 2.62 h. A sample containing this isotope has an…

A: decay constant (d) = 0.693/half life d = 0.693/2.62 hr -1 d = 0.2645 hr-1 d = 0.00007347328 sec-1…

Q: Use the following data to calculate the binding energy per nucleon in MeV of the Rhodium-103 nuclide…

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Q: a) Natural potassium contains 40K , which has a half-life of 1.277×109 years. What mass of 40K in a…

A:

Q: The isotope boron-12 undergoes beta decay. Write the reaction equation and determine the identity of…

A: Given data:  Parent nucleus = Boron-12 Type of decay = beta decay

Q: In a piece of rock from the Moon, the Rb content is assayed to be 1.89×1010 atoms per gram of…

A:

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 3.30 ✕ 1011 Bq when…

A: Given. N = 1.7*10¹⁵  dN/dt = 3.3*10¹¹ Formula used  N(t) = N⁰*0.5t/T Where  T is half life

Q: 38 Which statement explains the meaning of the half-life of a radioactive substance? A half the time…

A: Every radioactive substance has a characteristic property which is independent of the amount of…

Q: A patient is injected 465 MBq of radioactive isotopes with a half life of 110 minutes. How much…

A: Given: Half life, T=110 min=6600 s Radioactive injected in a body, N0=465 MBq Let's find the…

Q: . The activity of a radioactive sample decreases by 93.75 % in 2.5 years. What is the half-life of…

A:

Q: Problem 8:  In a living organism, a fixed fraction 1.30 × 10-12 of 12C is the radioactive isotope…

A: Given data: fixed fraction =1.30 × 10-12 of 12C Need to determine the numeric value is expected.

Q: The decay rate N, for N number of radioactive nuclei is dt -AN What is meant by higher decay…

A: Given data,

Q: The radioactive isotope 198Au has a half-life of 64.8 h. A sample containing this isotope has an…

A: Given data: The half -life of A198u is T1/2 =64.8 h The initial activity of the sample ,A =40 μCi…

Q: All the very heavy atoms found in the earth were created long ago by nuclear fusion reactions in a…

A: Given values: Half life of U235,  t12(U235)=7.04×108 yr Half life of U238,  t12(U238)=4.47×109 yr…

Q: The radioactive nuclide platinum-199 has a half-life of 30.8 minutes. A sample is prepared that has…

A: Given : Half life of platinum-199, t1/2 = 30.8 minutes Initial activity of the prepared sample, R =…

Q: Carbon-14 has a half-life of 5730 years. A sample of wood has been recovered by an archaeologist.…

A:

Q: A radioactive nuclide has a half-life of 30.0 y.What fraction of an initially pure sample of this…

A: a)

Q: A sample of carbon-14 initially consists of 5 × 10 24 particles. Carbon-14 has a half- life of 5730…

A: Solution: a. Calculate the decay constant for carbon-14 using the following relation. k=0.693t12…

Q: An unstable isotope of cobalt, 60Co, has one more neutron in its nucleus than the stable 59Co and is…

A: Given Data The half-life of the isotope is T1/2 = 5.3 years. The mass of the cobalt is m = 4.20×10-2…

Q: Carbon-14 dating is a method for finding the age of an organic artifact from the quantity of 14C it…

A: The given values are,

Q: A sample of plutonium-239 has a mass of 24.0 mg. If after 72300 years 6.00mg are left, what is the…

A: Given data:  Initial quantity of plutonium (N0) = 24.0 mg Time elapsed (t) = 72300 years  Remaining…

Q: A radioactive isotope has decayed to the point that 1/32 of the original content is left. How many…

A: Given data: The ratio of remaining content to original content  = 1/32 Required: Number of…

Q: Californium-254 has a half-life of 60days. (a) A sample has a mass of 16 mg initially. Find a…

A: Half life of a radioactive substance is a constant quantity. It tells the time taken by a given…

Q: The Half life of Iodine-131, used in thyroid treatments, is 8.0d. At a certain time, an amount of…

A:

Q: Initially, a particular sample has a total mass of 360 grams and contains 512 x 1010 radioactive…

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Q: The amount of radioactive 40K in a 70kg person is approximately 5000Bq. A) what is the number (N) of…

A: mass of person (m) = 70 kg Activity (A)  = 5000 Bq Half life of K40 = 1.25×109 years

Q: he half-life of the radioactive nucleus 88 Ra 226 is 1.6 × 10 3 yr. If a sample initially contains…

A:

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.