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4. ( 20pts) A DOC sample collected from the ocean is found to emit 13.2 beta particles per minute (dpm) per g of carbon. Calculate

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4. ( 20pts) A DOC sample collected from the ocean is found to emit 13.2 beta particles per minute (dpm) per g of carbon. Calculate the age of the DOC. Assume that each gram of carbon in living tissue has a disintegration rate of 15.3dpm, and use 5730yr for the half-life of carbon-14. Is this a surface or deep water sample, explain

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