Carbon dating example problem


28-Mar-2015 03:50

The amount of carbon-14 in the atomosphere is, on an average, relatively constant.Plants take in carbon-14 through the process of photosynthesis.It has been determined that the rate of radioactive decay is first order.We can apply our knowledge of first order kinetics to radioactive decay to determine rate constants, original and remaining amounts of radioisotopes, half-lives of the radioisotopes, and apply this knowledge to the dating of archeological artifacts through a process known as carbon-14 dating.As long as the organism is alive, the amount of carbon-14 remains relatively constant.

The units of measure for time are dependent upon the unit of measure for the rate constant.The ratio of "N/N Carbon-14 is a radioisotope formed in our atmosphere by the bombardment of nitrogen-14 by cosmic rays.In this equation, the units of measure for N and No can be in grams, atoms, or moles.It does not matter as long as they are like measures.

Animals eat the plants so they too have carbon-14 in their tissues.Carbon-14 is decaying constantly with a half-life of 5720 years.



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