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Why is carbon 12 used for carbon dating

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Added: 22.03.2021
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Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libby , who received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14 C combines with atmospheric oxygen to form radioactive carbon dioxide , which is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants.
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Why can’t Carbon-14 be used to date rocks or fossils that are a million years old?

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Carbon dating - Conservapedia

In this section we will explore the use of carbon dating to determine the age of fossil remains. Carbon is a key element in biologically important molecules. During the lifetime of an organism, carbon is brought into the cell from the environment in the form of either carbon dioxide or carbon-based food molecules such as glucose; then used to build biologically important molecules such as sugars, proteins, fats, and nucleic acids. These molecules are subsequently incorporated into the cells and tissues that make up living things. Therefore, organisms from a single-celled bacteria to the largest of the dinosaurs leave behind carbon-based remains.
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Can radioactive carbon dating be used to determine the age of dinosaur fossils why or why not

Once upon a time, way back before , there actually were two sets of atomic masses though everybody called them atomic weights then. One scale was used by physicists; the other by chemists. Both were based on weights compared to Oxygen, rather than Hydrogen.
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The Suess effect , also referred to as the 13 C Suess effect , [1] [2] is a change in the ratio of the atmospheric concentrations of heavy isotopes of carbon 13 C and 14 C by the admixture of large amounts of fossil-fuel derived CO 2 , which is depleted in 13 CO 2 and contains no 14 CO 2. More recently, the Suess effect has been used in studies of climate change. The term originally referred only to dilution of atmospheric 14 CO 2.
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