One method for determining the amount of corn in early Native American diets is the stable isotope r

One method for determining the amount of corn in early Native American diets is the stable isotope r

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One method for determining the amount of corn in early Native American diets is the stable isotope ratio analysis (SIRA) technique. As corn photosynthesizes, it concentrates the isotope carbon-13, whereas most other plants concentrate carbon-12. Overreliance on corn consumption can then be correlated with certain diseases, because corn lacks the essential amino acid lysine. Archaeologists use the mass spectrometer to separate the
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Unformatted text preview: and isotopes in samples of human remains. Suppose you use a velocity selector to obtain singly ionized (missing one electron) atoms of speed 8.50 and want to bend them within a uniform magnetic field in a semicircle of diameter 25.0 for the . The measured masses of these isotopes are 1.9910 26 ( ) and 2.1610 26 ( ). What is the separation of the and ions at the detector at the end of the semicircle?...
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