1) In a living organism, the decay of C-14 produces 15.3 disintegrations per minute per gram...
1) In a living organism, the decay of C-14 produces 15.3 disintegrations per minute per gram of carbon. The half-life of C-14 is 5730 years. A bone sample with 2.5 g of carbon has 22.5 disintegrations per minute. How old is the bone sample in years?
2) There are three isotopes of phosphorus. Only one of them is stable. Calculate the binding energy per nucleon (in MeV) for P-30 (atomic mass = 29.9783 u). H = 1.007825 u and n = 1.008665 u.
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1) In a living organism, the decay of C-14 produces 15.3
disintegrations per minute per gram...
In a living organism, the decay of C-14 produces 15.3 disintegrations per minute per gram of...
In a living organism, the decay of C-14 produces 15.3 disintegrations per minute per gram of carbon. The half-life of C-14 is 5730 years. A bone sample with 2.6 g of carbon has 15.7 disintegrations per minute. How old is the bone sample in years?
A skeleton has a carbon-14 decay rate of 0.27 disintegrations per minute per gram of carbon....
A skeleton has a carbon-14 decay rate of 0.27 disintegrations per minute per gram of carbon. When did the animal live? Assume that living organisms have a carbon-14 decay rate of 15.3 d/min g C and that carbon-14 has a half-life of 5730 yrs.
(4) (1 pt) A sample of bone is subjected to radiocarbon dating. The current decay rate...
(4) (1 pt) A sample of bone is subjected to radiocarbon dating. The current decay rate observed for its carbon-14 content is 11.2 disintegrations per minute per gram of carbon. What is the age (in years) of the bone? The half- life for carbon-14 is 5.73x10 yrs., and the decay rate for carbon-14 in living organisms is 15.3 disintegrations per minute per gram of carbon.
The half-life of carbon-14 is 5,730 years. An artifact produces 9.9 disintegrations of 14C per minute...
The half-life of carbon-14 is 5,730 years. An artifact produces 9.9 disintegrations of 14C per minute per gram of carbon in the sample. Estimate the age of this sample assuming that its original radioactivity was 15.3 disintegrations per minute per gram of carbon.
A sample of charred animal bones found in a cave has a carbon-14 decay rate of...
A sample of charred animal bones found in a cave has a carbon-14 decay rate of 5.2 disintegrations per minute per gram of carbon (5.2 dis/min-g C). Living organisms have a decay rate of 15.3 dis/min-g C. The half-life of carbon-14 is 5715 yr. How old is the bone sample? (All radioactive elements decay according to first order kinetics.) a)2.8 x 10 3 yrs b)3.9 x 10 3 yrs c)1.9 x 10 3 yrs d)8.9 x 10 3 yrs
An archaeologist graduate student found a leg bone of a large animal during the building of...
An archaeologist graduate student found a leg bone of a large animal during the building of a new science building . The bone had a carbon-14 decay rate of 14.8 disintegration per minute per gram of carbon .Living organisms have a decay rate of 15.3 disintegrations per minute .How old is the bone? (a) 53.3 years. (b), 25 years. (c), 111years. (d), 83 years. (e), 275 years.
A skull has a carbon-14 decay rate of 3.85 disintegrations/min/g of carbon. How old is the skull if living organisms have a C-14 decay rate of 16.3 disintegration/min/g, t1/2=5730 yr
A skull has a carbon-14 decay rate of 3.85 disintegrations/min/g of carbon. How old is the skull if living organisms have a C-14 decay rate of 16.3 disintegration/min/g, t1/2=5730 yr
7.3 The decay rate of the isotope carbon-14 (14C) is often used to establish the date...
7.3 The decay rate of the isotope carbon-14 (14C) is often used to establish the date on which carbon-containing matter died. In the upper atmosphere, cosmic radi- ation synthesizes 14C. This process balances the loss of 14C through radioactive decay. Living matter, which exchanges carbon with atmospheric carbon diox- ide and maintains its 14C level, produces 15.3 disintegrations per minute per gram of carbon it contains. Dead organisms no longer exchange carbon with the atmosphere, and the 14C content decreases...
An archeological artifact was subjected to radiocarbon dating. The artifact showed a carbon-14 decay rate of...
An archeological artifact was subjected to radiocarbon dating. The artifact showed a carbon-14 decay rate of 12.2disintegrations/min per gram of carbon. Carbon-14 has a half-life of 5715 years, and currently living organisms decay at the rate of 15.3 disintegrations/min per gram of carbon. What is the approximate age of the artifact? Select one: A. 371 years old B. 6597 years old C. 851 years old D. 1867 years old
A certain radioactive substance decays at a rate proportional to its remaining mass M. a. Express this rate of decay as a differential equation. b. When a living organism dies it ceases to replac...
A certain radioactive substance decays at a rate proportional to its remaining mass M. a. Express this rate of decay as a differential equation. b. When a living organism dies it ceases to replace the carbon isotope C-14, and 48. the C-14 that is present decays with a half-ife of about 5730 years. If archeologists discover a fossilized bone that has 30% of the C-14 of a live bone, approximately how old is it?
A certain radioactive substance decays at...
A skeleton has a carbon-14 decay rate of 0.27 disintegrations per minute per gram of carbon. When did the animal live? Assume that living organisms have a carbon-14 decay rate of 15.3 d/min g C and that carbon-14 has a half-life of 5730 yrs.
(4) (1 pt) A sample of bone is subjected to radiocarbon dating. The current decay rate observed for its carbon-14 content is 11.2 disintegrations per minute per gram of carbon. What is the age (in years) of the bone? The half- life for carbon-14 is 5.73x10 yrs., and the decay rate for carbon-14 in living organisms is 15.3 disintegrations per minute per gram of carbon.
7.3 The decay rate of the isotope carbon-14 (14C) is often used to establish the date on which carbon-containing matter died. In the upper atmosphere, cosmic radi- ation synthesizes 14C. This process balances the loss of 14C through radioactive decay. Living matter, which exchanges carbon with atmospheric carbon diox- ide and maintains its 14C level, produces 15.3 disintegrations per minute per gram of carbon it contains. Dead organisms no longer exchange carbon with the atmosphere, and the 14C content decreases...
An archeological artifact was subjected to radiocarbon dating. The artifact showed a carbon-14 decay rate of 12.2disintegrations/min per gram of carbon. Carbon-14 has a half-life of 5715 years, and currently living organisms decay at the rate of 15.3 disintegrations/min per gram of carbon. What is the approximate age of the artifact? Select one: A. 371 years old B. 6597 years old C. 851 years old D. 1867 years old
A certain radioactive substance decays at a rate proportional to its remaining mass M. a. Express this rate of decay as a differential equation. b. When a living organism dies it ceases to replace the carbon isotope C-14, and 48. the C-14 that is present decays with a half-ife of about 5730 years. If archeologists discover a fossilized bone that has 30% of the C-14 of a live bone, approximately how old is it?
A certain radioactive substance decays at...
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