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Solve please Lead-210 decays at a regular and consistent exponential rate. The half-life of Lead-210 is approximately 22 years. If an artifact that originally contained

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Lead-210 decays at a regular and consistent exponential rate. The half-life of Lead-210 is approximately 22 years. If an artifact that originally contained 62 grams of Lead-210 now contains 30 grams of Lead-210, how old is it? (Round your answer to the nearest year.)

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