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(credit: Butko, Wikimedia Commons) Carbon-11 has a half-life of 20.334 min. If 1 kg of carbon-11 sample exists at the beginning of an hour, (b) how much material will remain at the end of the hour and (c) what will be the decay activity at that time?Carbon-14 dating was not performed on the shroud until 1988, when the process had been refined to the point where only a small amount of material needed to be destroyed.Samples were tested at three independent laboratories, each being given four pieces of cloth, with only one unidentified piece from the shroud, to avoid prejudice.All three laboratories found samples of the shroud contain 92 percent of the Part of the Shroud of Turin, which shows a remarkable negative imprint likeness of Jesus complete with evidence of crucifixion wounds.
The shroud first surfaced in the 14th century and was only recently carbon-14 dated.
(a) The decay constant shows that 0.0568 percent of the nuclei in a carbon-11 sample will decay each second.
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