The radioisotope ¹⁴C (half life = 5730 years) is used for carbon dating. What is the...
The radioisotope ¹⁴C (half life = 5730 years) is used for carbon dating. What is the first order rate constant for ¹⁴C?
Homework Answers
all radioactive decay are first order kinetics
for first order
t1/2 = 0.693 /K
K = 0.693 / t1/2
t1/2 = 5730 yeas
K = 0.693 / 5730
K = 1.2 x 10-4 year-1
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The radioisotope ¹⁴C (half life = 5730 years) is used for carbon
dating. What is the...
Carbon-14 is a radioisotope that is used for dating biological organisms. The half-life of C-14 is...
Carbon-14 is a radioisotope that is used for dating biological organisms. The half-life of C-14 is 5730 years. When a one-gram sample of carbon from fresh peat is measured for radioactivity, 900 beta decays are recorded every hour. A one-gram sample of carbon is obtained from a peat deposit and is measured for radioactivity. If 113 beta decays are observed every hour, how many half-lives of C-14 have passed since the deposit was formed? A. 1/8 B.3 C.113 D.8 Approximately...
The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is years. A...
The radioactive isotope carbon-14 is used for radiocarbon
dating. The half-life of carbon-14 is years. A wooden artifact in a
museum has a count that is times that found in living organisms.
Estimate the age of the artifact.
The radioactive isotope carbon-14 1s used for radiocarbon dating. The half-life of carbon-14 is 5730 103 years. 14 A wooden artifact in a museum has a C count that is 3.13 x 10 times that found in living organisms Estimate the age...
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)...
Question 23 of 23 Carbon-14 is a radioisotope that is used for dating biological organisms. The...
Question 23 of 23 Carbon-14 is a radioisotope that is used for dating biological organisms. The half-life of C-14 is 5730 years. When a 1 g sample of carbon from fresh peat is measured for radioactivity, 900 beta decays are recorded every hour A 1 g sample of carbon is obtained from a peat deposit and is measured for radioactivity. If 113 beta decays are observed every hour, how many half-lives of C-14 have passed since the deposit was formed?...
1. The half-life of carbon-14 is 5730 years. A sample is found to have one-eighth the...
1. The half-life of carbon-14 is 5730 years. A sample is found to have one-eighth the original amount of carbon-14 in it. How old is the sample? 5730 years, 716 years, 45800 years, 17200 years 2. Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old? Sea shells do not have radioisotopes, carbon dating is only useful on plants, uranium dating is better for items older than 1/2 million years,...
Carbon-14 is a radioactive isotope with a half-life of 5730 years and is often used for
Carbon-14 is a radioactive isotope with a half-life of 5730 years and is often used for
A. Consider a radioisotope “X” with a half-life of 2.5 years. Determine (to the nearest 0.1...
A. Consider a radioisotope “X” with a half-life of 2.5 years. Determine (to the nearest 0.1 mg) how much of a 1000 mg sample of “X” remains after a period of 17.5 years (show all work). B. In radioactive dating using carbon-14 and carbon-12, why is it essential that carbon-12 be a stable isotope?
carbon-11 is used in medical imaging. the half life of this radioisotope is 20.4 min. what...
carbon-11 is used in medical imaging. the half life of this radioisotope is 20.4 min. what percentage sample remains after 50.0 min
If carbon-14 has a decay half-life of 5730 years, what fraction of the original carbon-14 would...
If carbon-14 has a decay half-life of 5730 years, what fraction of the original carbon-14 would you expect to remain intact in a 3000 year old parchment scroll, and why?
1. Consider a radioisotope “X” with a half-life of 2.5 years. Determine (to the nearest 0.1...
1. Consider a radioisotope “X” with a half-life of 2.5 years. Determine (to the nearest 0.1 mg) how much of a 1000 mg sample of “X” remains after a period of 17.5 years (show all work). 2. In radioactive dating using carbon-14 and carbon-12, why is it essential that carbon-12 be a stable isotope?
The radioactive isotope carbon-14 is used for radiocarbon
dating. The half-life of carbon-14 is years. A wooden artifact in a
museum has a count that is times that found in living organisms.
Estimate the age of the artifact.
The radioactive isotope carbon-14 1s used for radiocarbon dating. The half-life of carbon-14 is 5730 103 years. 14 A wooden artifact in a museum has a C count that is 3.13 x 10 times that found in living organisms Estimate the age...
Question 23 of 23 Carbon-14 is a radioisotope that is used for dating biological organisms. The half-life of C-14 is 5730 years. When a 1 g sample of carbon from fresh peat is measured for radioactivity, 900 beta decays are recorded every hour A 1 g sample of carbon is obtained from a peat deposit and is measured for radioactivity. If 113 beta decays are observed every hour, how many half-lives of C-14 have passed since the deposit was formed?...
Carbon-14 is a radioactive isotope with a half-life of 5730 years and is often used for
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