Wood was excavated from Stonehenge and found, using 14C dating, to be 4500 years old. What...
Wood was excavated from Stonehenge and found, using 14C dating, to be 4500 years old. What is the 14C activity in 1.00 g of carbon taken from this wood. Express your answer with appropriate units.
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Wood was excavated from Stonehenge and found, using 14C dating,
to be 4500 years old. What...
1. The nucleus 14C (half life 5730 y) is used in radiocarbon dating to determine the...
1. The nucleus 14C (half life 5730 y) is used in radiocarbon dating to determine the age of previously living material. (a)A certain sample of wood currently shows a decay rate of 35.0 decays/s of 14C The wood is taken from a structure that was built from a tree that was cut 7,000 years ago. What would have been the 14C decay rate of this wood sample when the tree was cut? (b) Find the total binding energy (in MeV)...
A sample of wood from an ancient wheel was found to contain 20.8 % 14C content...
A sample of wood from an ancient wheel was found to contain 20.8 % 14C content as compared to a present-day sample. The tyz for 14C is 5720 yrs. Determine the decay constant for 14C and the age of the wood. I- Click here to enter answer-
Radiocarbon dating of a sample of wood from the tomb of an Egyptian pharaoh found that...
Radiocarbon dating of a sample of wood from the tomb of an Egyptian pharaoh found that in the 1 gram of the sample there were 9.843 times 10^-15 mol of C-14 and 1.202 times 10^-2 mol of C-12. The C-14 isotope is radioactive and decays with a half-life of 5, 730 years: the C-12 isotope is stable (does not decay). If the initial ratio of these isotopes is known to have been Number of C-14/Number of C-12 = 1.20 times...
Radiocarbon or 14C is a widely used tracer for groundwater movement for up to 30,000 years....
Radiocarbon or 14C is a widely used tracer for groundwater movement for up to 30,000 years. 14C can be used to estimate recharge rates and horizontal flow rates important for water related policy decisions. 14C has a half-life of 5730 years and the ratio of 14C to all C from biological material is 1.3 × 10−12. The atomic mass of carbon is 12.0107 g/mol. Your sample is 0.29 g of carbon. The activity of this sample, due to presence of...
A 2.10-g sample of wood from an archaeological site gave 8600 disintegrations of 14C in a 10-hour...
A 2.10-g sample of wood from an archaeological site gave 8600 disintegrations of 14C in a 10-hour measurement. In the same time, a 2.10-g modern sample gave 19000 disintegrations. Calculate the age of the wood. The half-life of carbon-14 is 5730 years.
In a C-14 dating measurement, a 1.00 g wood sample from a cave fielded 7900 counts...
In a C-14 dating measurement, a 1.00 g wood sample from a cave fielded 7900 counts over a 20hr period, while a 1.00g sample from a reasonably similar tree outside the cave fielded 18,4000 counts over the same period. How old is the sample from the cave given that the half life of C-14 is 5.73*10^3yr?
Course Contents HOMEWORK Set 10 (due Weds 12/4 at 11:59PM) Carbon-14 dating Timer Notes Evaluate ,...
Course Contents HOMEWORK Set 10 (due Weds 12/4 at 11:59PM) Carbon-14 dating Timer Notes Evaluate , Feedback Print The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the şample is measured to be 0.670 times the Carbon-14 activity of living plants. What is the age of the sample in years? (The half-life of the Carbon- 14 isotope is 5730 years.) Tries 0/20 Submit Answer Send Feedback G...
Problem # 8 Discuss Radioactive Decay. Outline the Principles of Carbon Dating. Provide necessary Mathematical Equat...
Problem # 8 Discuss Radioactive Decay. Outline the Principles of Carbon Dating. Provide necessary Mathematical Equations. Total 250 Words Minimum. Solve the following 4 problems. Show Full Work. Problem # A: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 counts per minute per gram. What is the age of the piece of wood in years? The decay rate of carbon-14 in fresh wood today is 13.6 counts per minute per gram, and...
5. A palaeontologist claims to have found a Woolly Mammoth fossil who lived 20,380 years ago....
5. A palaeontologist claims to have found a Woolly Mammoth fossil who lived 20,380 years ago. Carbon 14 dating reveals that 42.341% of the original 14C remains? The half-life for 14C is 5770 years. Assume the radioactive decay is first order. Should we accuse the palaeontologist of fraud? Enter your answer 6. A palaeontologist claims to have found a Tyrannosaurus Rex fossil who has lived about 70 million years ago. Uranium-235 dating has revealed that 93.3% of the original 235U...
The age of a piece of wood from an archeological site is to be determined using...
The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample is measured to be 0.671 times the Carbon-14 activity of living plants. What is the age of the sample in years? (The half-life of the Carbon-14 isotope is 5730 years.) Submit Answer Tries 0/20
A sample of wood from an ancient wheel was found to contain 20.8 % 14C content as compared to a present-day sample. The tyz for 14C is 5720 yrs. Determine the decay constant for 14C and the age of the wood. I- Click here to enter answer-
Radiocarbon dating of a sample of wood from the tomb of an Egyptian pharaoh found that in the 1 gram of the sample there were 9.843 times 10^-15 mol of C-14 and 1.202 times 10^-2 mol of C-12. The C-14 isotope is radioactive and decays with a half-life of 5, 730 years: the C-12 isotope is stable (does not decay). If the initial ratio of these isotopes is known to have been Number of C-14/Number of C-12 = 1.20 times...
Course Contents HOMEWORK Set 10 (due Weds 12/4 at 11:59PM) Carbon-14 dating Timer Notes Evaluate , Feedback Print The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the şample is measured to be 0.670 times the Carbon-14 activity of living plants. What is the age of the sample in years? (The half-life of the Carbon- 14 isotope is 5730 years.) Tries 0/20 Submit Answer Send Feedback G...
Problem # 8 Discuss Radioactive Decay. Outline the Principles of Carbon Dating. Provide necessary Mathematical Equations. Total 250 Words Minimum. Solve the following 4 problems. Show Full Work. Problem # A: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 counts per minute per gram. What is the age of the piece of wood in years? The decay rate of carbon-14 in fresh wood today is 13.6 counts per minute per gram, and...
5. A palaeontologist claims to have found a Woolly Mammoth fossil who lived 20,380 years ago. Carbon 14 dating reveals that 42.341% of the original 14C remains? The half-life for 14C is 5770 years. Assume the radioactive decay is first order. Should we accuse the palaeontologist of fraud? Enter your answer 6. A palaeontologist claims to have found a Tyrannosaurus Rex fossil who has lived about 70 million years ago. Uranium-235 dating has revealed that 93.3% of the original 235U...
The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample is measured to be 0.671 times the Carbon-14 activity of living plants. What is the age of the sample in years? (The half-life of the Carbon-14 isotope is 5730 years.) Submit Answer Tries 0/20
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