the carbon in a fossil was found to contain 12.5%  C-14 relative to living organism. what is the age of the fossil?

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

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Q: unearth a treasure chest (you have such good luck!). Inside the chest is a beautiful clay vase.…

A: Given: Initial concentration of [C14]0=10-10 % Final concentration of   [C14]0=10-13 % Half life…

Q: What two processes are represented by the following transmutation reaction? 1271 + In - - > 128Xe +…

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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: If the half-life of a parent material is 10 Ma, and about 88% (rounded) has decayed to daughter…

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Q: 30% of a radioactive substance has decayed after 10years, what is its half-life?

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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: At the end of two half-lives, what fraction of the atoms had not decayed?

A: Answer is given below.

Q: A patient is given 0.500 ug of technetium -99m, a radioactive isotope with a half-life of 6 hours.…

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Q: A wooden boat discovered just south of the Great Pyramid in Egypt has a carbon-14 / carbon-12 ratio…

A: Age of wooden boat:Carbon-14 Half life is 5730 years.

Q: A shell fossil that originally contained 100 mg of carbon-14 non contains 75 mg of the isotope.…

A: Initial amount, [A]0 = 100 mg  Final amount, [A] = 75 mg  Half-life, t1/2 = 5570 years

Q: A 3.6-kg laboratory animal receives a single dose of 8.92×10-4 Gy. (a) How many rads did the animal…

A: (a) Given data contains, Mass of laboratory animal is 3.6-kg. Dose received is 8.92x10-4 Gy.

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: A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given,0.050 mg of technetium-99m,Half-life is 6.0 hours.1.0×10-3 mg

Q: A wooden artifact is found in an ancient tomb. Its carbon-14   activity is measured to be 61.0% of…

A: Activity of carbon-14 = 0.61 R/Ro = 0.61 We will use the below equation for decay process- R=…

Q: What isotope is used for radioactive dating of previously lived entity ?

A: Isotopes are the species which have same atomic number but different mass number. These are the…

Q: Why can’t radiocarbon dating be used to determine the age of an artifact that is over 50,000 years…

A: The reason why radiocarbon dating could not be used to obtain the age of an artifact which is 50,000…

Q: A patient is given 0.050 ug of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given: Mass of technetium-99m = 0.050μg half life= 6.0 h Mass of technetium to decay= 1.0×10-3μg

Q: A small figure carved from wood, believed to predate the period of Roman occupation of the Middle…

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Q: What is the isotope that is used in carbon dating? What is its half-life?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: A sample of Carbon is observed to have 15g left after an estimated time of 10000years. Determine the…

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Q: Which of the following conditions is not necessary for a sustained chain reaction ? A) Fast moving…

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Q: The ratio of carbon-14 to carbon-12 in a piece of wood discovered in a cave is R = 1/915. Estimate…

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Q: A radioactive nuclide of mass number 94 has been prepared by neutron bombardment. If 4.7 µg of this…

A: Rate of disintegration for radioactive nuclide = λ[A]1 Where λ is disintegration constant Now , 20…

Q: A wooden relic was placed in the ground around 1800 BCE. Carbon-14 has been decaying ever since the…

A: The carbon dating is the most useful process to know the age of the tree . Or any carbon containing…

Q: 24 Am is used in many home smoke alarms. It has a decay half-life of 457 years. How long does it…

A: All radioactive decay follows first order kinetics. So in order to solve for the time required we…

Q: An 80 g sample of radioisotope decayed to 10 g after 24 days. What was the total number of grams of…

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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: A fossil is found to have a 14C level of 68.0% compared to living organisms. How old is the fossil?

A: Using first order kinetics formula we can determine age of fossil.

Q: A) how is it possible to date an age of a fossil through carbon 14? and what concepts and formulas…

A: Carbon 14 is a radio active isotope of carbon. The quantity of carbon 14 left in a fossil fuel can…

Q: some mammoth bones found in Arizona were found by Carbon-14 dating to be 1.113 x 1014 years old.…

A: We have The half-life of C14 is 5730 years t12=0.693k.......1 By rearranging the equation 1, we get…

Q: Calculate the age of a fossil that had 100 g of C-14 and now it has 12.5 g of C-14. The half-life of…

A: Use first order kinetic formula to get answer. Half life is given in years so we can use first order…

Q: What is the estimated the age of an artifact that has 1/16 of the amount of carbon-14(relative to…

A: Given :  Half life of C -14 isotope = 5730 years  Amount of C-14(relative to C-12) in artifact =…

Q: In what main way is fission different from radioactive de-cay? Are all fission events in a chain…

A: Even though radioactive particles are produced in both radioactive decay and fission, the method…

Q: A sample of a wooden artifact gives 5.0 disintegrations/min/g carbon. The half-life of C-14 is 5730…

A: Half life is defined as the time taken by a radioactive sample to decay to half of its original…

Q: What is the estimated age of a material whose C-14 activity is only 30% that of living wood? (C-14…

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Q: Carbon extracted from an ancient skull contained only one-fifth as much 14C as carbon extracted from…

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Q: A hazardous material was found to decay at a rate proportional to the amount present. Initially,…

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Q: 17 1. on + ? + ENERGY Complete the following nuclear reaction 3H + 2,H O A. SHe <-- + u0 O D.a

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Q: One of the nuclides in spent nuclear fuel is UU-235, an alpha emitter with a half-life of 703…

A: The half-life of U-235 is = 703 million years The time to reach the amount of U-235 to 1/4 of its…

Q: A fabric remnant from a burial site has a 14C/1C ratio of 0.818 of the original value. How old is…

A: Since we know that the half life of 14C decay into 12C = 5730 years  And for the decay reactions,…

Q: Predict the mode of decay begin 65^N undergoes. Positron Beta It is stable and does not undergo…

A: The beta decay of 65Ni is shown

Q: Wood was excavated from Stonehenge and found, using 14C dating, to be 4500 years old. What is the…

A: Calculation of no. of molecules of 14-C in 1.0 g: N=given massMolar mass×6.022×1023 molecules=1.0…

Q: A fossilized bone is found to contain one-fifth of the C-14 level found in living matter. Estimate…

A: Given,  A fossilized bone is found to contain one-fifth of the C-14 level the age of the fossil is:

Q: A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: decay constant , k = 0.693t12 = 0.6936 hour-1  integrated rate equation for radio active decay (…

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: Carbon-14 Half-Life 120 100 80 60 40 20 5000 10000 15000 20000 25000 80000 Time in Years If a…

A: The fossilized bone is found 1/8 ratio of carbon-14 to carbon-12. The approximate age of the bone…

Q: The frozen remains of a young Incan womanwere discovered by archeologist Johan Reinhard on Mt.…

A: Find the amount of carbon-14 present if the estimated age is 500 years. The exponential model for…

Q: the carbon in a human skull  in South America contained 25% c-14 relative to living orginisms. How…

A: Half life for C-14 is t1/2 = 5730 yearsBut t1/2  = ln 2 / k5730 = ln 2 / kk = 1.2096x10-4 year-1 The…