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...
half-life n 1.(General Physics) the time taken for half of the atoms in a radioactive material to undergo decay. Symbol:τ 2.(Biology) the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated (biological half-life...
The half life of Carbon-14 is. . A.5730 years B.5.0 days C.4.5´109 years D.-- 查看答案
medicine The length of time required for a radioisotope to decay to one-half of the original amount having the same radioactivity; a radioisotope’s effective T1/2 is either the time of decay—physical T1/2—or the time to elimination from a biological system. See Biological half-life ...
We have measured the half-life of O, a superallowed (0→0) β decay isotope. The O was produced by the C(He,n)O reaction using a carbon aerogel target. A low-energy ion beam of O was mass separated and implanted in a thin beryllium foil. The beta particles were counted with plast...
For example, the amount of carbon in a fossil sample can be measured to determine the age of that fossil. It is known that the radioactive substance carbon-14 has a half-life of 5,570 years. The half-lives of other radioactive substances can range from tiny fractions of a second to ...
half-life, measure of the average lifetime of a radioactive substance (see radioactivity) or an unstable subatomic particle. One half-life is the time required for one half of any given quantity of the substance to decay. For example, the half-life of a particular radioactive isotope of th...
carbon-14 continuously decays. For example, if the carbon-14 to carbon-12 ratio in a wooden object found in an archaeological dig is half what it is in a living tree, this suggests that the object was made from wood cut down 5730 years ago. Highly accurate determinations of carbon-...
What else can you tell me about the half life of atoms? Half-lives range from fractions of a second to billions of years. For example, Carbon-14 (C-14), a naturally occurring radionuclide, has a half-life of 5,730 years. After this amount of time passes, half of the initial amount...