(Answered) A 100 g sample of carbon from rolls of parchment found near

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A 1.00 g sample of carbon from rolls of parchment found near the dead sea undergoes 1.4 x 10 * 4 decay of carbon-14 in 20 h. What is the approximate time passed since one were used to make these rolls knowing that for a living one gram of carbon produced 15.3 disintegrations per minute.

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