A wooden artifact is found in an ancient tomb. Its carbon-14   activity is measured to be 61.0% of that in a fresh sample of wood from the same region. Assuming the same amount of 14C was initially present in the artifact as is now contained in the fresh sample, determine the age of the artifact.

Q: The half life for the decay of carbon-14 is 5.73 × 10’ years. Suppose the activity due to the…

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Q: How long does it take for a radioactive substance to decay from 360 cps to 11.25 cps if the…

A: Half-life is the time required for the reaction to be half completed. It is denoted by t1/2 . For a…

Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137…

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Q: A sample of wood from an Egyptian mummy case has a specific activity of 9.41 d/min-g. How old is the…

A: Solution: We know that --- for a sample of wood from an Egyptian mummy which is related to…

Q: The carbon-14 activity in papyrus growing along the Nile River today is 231 decay events per…

A: Given data,Initial activity of C-14=231 decay events/KgFinal activity of C-14=140 decay…

Q: A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium…

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Q: While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73…

A: Solution Tc ninety nine m is wide used for diagnostic and therapeutic functions. It emits gamma…

Q: Age of the Earth. Suppose that at the formation of the Earth there were equal amounts of 235U and…

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Q: 7. The age of an ancient tree trunk is estimated using radiocarbon dating. If the tree gives 3.75…

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Q: Samples recovered from an archaeological site are determined to have a 14C activity of 1.3 dpm/g.…

A: Given:   The activity of C-14 from recovered sample is 1.3 dpm/g. The activity of C-14 in living…

Q: The half life for the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: Half-life of carbon-14 decay = 5730 years. Activity of carbon-14 in the sample = 51 Bq. And…

Q: The half life for the decay of carbon-14 is 5.73 x 10° years. Suppose the activity due to the…

A: Here by applying first order disintegration equation ,we can determine the age of artifacts.

Q: If 29.5% of the original amount of 14C is present in a wooden tool at the time of analysis, what is…

A: Since the carbon decay is a first order kinetics reaction Hence for the first order reaction we can…

Q: How long would it take for the amount of u-235 to reach 1/8 of its initial amount? One of the…

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Q: A wooden artifact from an Indian temple has a 14C activity of 42 counts per minute as compared with…

A: The question is based on concept of radioactive decay. we have to calculate the age of the wooden…

Q: A rock contains 0.257 mg of lead-206 for every milligram of uranium-238. The half-life for the decay…

A: The first-order rate law can be transformed into another highly useful equation with the decay…

Q: The half life for the decay of carbon-14 is 5.73 × 10 years. Suppose the activity due to the…

A: Given that : Half-life of carbon-14 = 5.73 x 103 years The activity due to the radioactive decay =…

Q: The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the…

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Q: 2. The radioactive potassium-40 isotope decays to argon-40 with a half-life of. a. Write a balanced…

A: t1/2 = 1.2 x 109 year Initial Mass of K = 100 g Remaining Mass = 18 g

Q: Carbon-14 has a half-life of 5,730 years. If a sample contained 70 mg originally, how much is left…

A: Carbon-14 has a half-life of 5,730 years. If a sample contained 70 mg originally, how much is left…

Q: 100 43 3. The half-life of TC, a B emitter, is 15.8 s. (a) How many atoms of 43TC are present in a…

A: An isotope exhibits radioactivity or emits radioactive particles, when the nucleus of the isotope is…

Q: What is C-14 activity in a sample that is 2.0 x 104 yr old? Assume that C-14 activity in the living…

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Q: If californium-251 transmutes into curium-247 and some other pieces as time goes on, which nuclear…

A: Answer :-  The nuclear reaction is alpha decay…

Q: A wooden object from a prehistoric site has a carbon-14 activity of 10 counts per minute (CPM)…

A: Given: Half-life = 5730 years [A]=10 cpm [A]0 = 40 cpm

Q: A sample has a half life of 100 years. If it has been 200 years since it started to decay and there…

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Q: The half-life of oxygen-15 is 124 ss. If a sample of oxygen-15 has an activity of 4800 BqBq, how…

A: Half-life of a reaction is the time at which the initial concentration of the reactant becomes half.…

Q: The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given…

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Q: A certain radioactive material is known to decay at a rate proportional to the amount present. If…

A: Consider the given information is as follows; Initial amount N0 = 500 mg Amount after 3 Nt years =…

Q: 14.25 A wooden artifact is burned and found to contain 21 g of carbon. The ¹4C activity of the…

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Q: A wooden artifact is burned and found to contain 21g of carbon. the 14c activity of the sample is…

A: The half-life of a reaction is the time taken for the reactant to reduce to half its initial value…

Q: The half life for the decay of carbon-14 is 5.73 x 10³ years. Suppose the activity due to the…

A: Given: The half-life of carbon-14 = 5.73 × 103 years The activity of the sample = 81 Bq The activity…

Q: 2 mol of beryllium-8 nuclei combines to form 1 mol of oxygen-16. The mass decrease is 0.0157 g.…

A: E = ∆m x c2 Where, E = energy in J; ∆m = mass decrease in kg and c = velocity of light

Q: What is the age of the artifact?

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Q: If a rock sample was found to contain 4.30 x 10-7 mol of argon-40, how much potassium-40 would also…

A: Nuclear disintegration follows first order kinetics  λ=2.303 log(A0/A)/t  λ=0.693/t1/2 or 0.693/t1/2…

Q: The radioactive cobalt isotope, "Co, has an half-life of 63 months and undergoes decay. The m of Co…

A: From the data  A) We are calculating number of moles of cobalt after 5 years B) The activity of…

Q: The half life for the decay of carbon-14 is 5.73 × 10’ years. Suppose the activity due to the…

A: We have to calculate the age of artifact.

Q: A rock contains a Pb-206 to U-238 mass ratio of 0.473:1.00. Assuming the rock did not contain any…

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Q: The half life for the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: The half-life for the decay of carbon= 5.73×103 years The activity of fresh wood sample= 99…

Q: In 2002, a wooden beam from the Wupatki Indian ruin in Arizona was found to contain 227 mg of…

A: Since the carbon decay reactions are first order reactions And since we know that the relationship…

Q: The cloth shroud from around a mummy is found to have a 14C activity of 8.3 disintegrations per…

A: Given, The initial decay rate of carbon of cloth = 8.3 dis/min. The decay rate of carbon for living…

Q: If a sample of radioactive material undergoes 1.0134E13 decay events in 83 seconds, how many Curies…

A: Solution: We have decay of given radioactive sample is 1.0134E13 in 83 seconds. By the definition we…

Q: A wooden artifact from an ancient tomb contains 30 percent of the carbon -14 that is present in…

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Q: The half life for the decay of carbon-14 is 5.73 x 10° years. Suppose the activity due to the…

A:

Q: What is the approximate age of the artifact?

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Q: The isotope Np-238 has a half life of 2.0 days. If 96 grams of it were present on Monday, how much…

A: Here given, The half-life of Np-238 (t1/2)= 2 days. Initial amount present (N0) = 96 g Time (t) = 6…

Q: A freshly prepared sample of radioactive nuclide undergoes 3312 disintegrations per second. After…

A: The radioactive reaction is first order reaction hence, it will follow first order of kinetics as-…

Q: the half-life of aluminum 26 is .74 million years. Suppose an asteroid contained 800 kg of aluminum…

A: The half-life of aluminum 26 is 0.74 million years. The mass of aluminum 26 present in asteroid is…

Q: Thorium-227 has a half-life of approximately 19 days. What percentage of an original amount of…

A:

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.