The half life of Carbon-14 is. . A.5730 years B.5.0 days C.4.5´109 years D.-- 查看答案
The half-life of carbon-14 has been determined with an accuracy believed to be higher than that of previously reported values. Carbon dioxide was liberated by the action of perchloric acid on barium carbonate which contained C14 in approximately 44 percent isotopic abundance. Samples of this C14 ...
The half life for Carbon-14 is 5730 years. Calculate the amount of time it would take 60.0g of Carbon-14 to be reduced to only 7.50There are 2 steps to solve this one. Solution 100% (3 ratings) Share Step 1 Formula f...
Murder! Espionage! Cosmic rays! Eighty years ago, the discovery of one small isotope helped us unravel the mysteries of the past.
Noun1.half-life- the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate) half life period,period of time,time period- an amount of time; "a time period of 30 years"; "hastened the period...
The half-life of carbon-14 is 5730 years. This means that after 5730 years have elapsed, half of an initial quantity of carbon-14 would have disintegrated. What is the half life of uranium? The half-life of uranium-238 is 4.5 billion years. It is one of the three natural occurring ur...
(4)A wooden artifact from an ancient tomb contains 65% of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years.) 相关知识点: 试题来源: 解析 (1) ① ②1.6 g ③70 yr (2)18 yr (3)149 h (4)3560...
𝟏𝟒 % 𝑪 𝟏𝟒 % 𝑵 𝟏𝟒 Ratio of 𝑪 𝟏𝟒 to 𝑵 𝟏𝟒 1 2 3 4 The half-life of Carbon-14 is 5730 years. This means after 5730 years, only half of a sample of Carbon-14 will remain. How many years have passed if only 6.25% of a sample of Carbon-14 ...
The half-lives of 51Cr, 48Cr, and 48V have been determined by following the decay of the isotopes for six to ten half-lives. The half-lives were obtained by a least-squares weighted fit to the data. The half-life of 48Cr (T12=21.56+/-0.03) is considerably lower than previous measur...
t1/2= the half-life of the decaying quantity Half Life Statistics Visualized: Radioactive Decay:The half-life of Carbon-14, used in archaeological dating, is about 5,730 years.Source from National Geographic Medicine:The half-life of caffeine in the human body is about 5 hours.Source from ...