Problem

Smoke detectors contain small amounts of americium-241. Am-241 decays by emitting -parti...

Smoke detectors contain small amounts of americium-241. Am-241 decays by emitting -particles and has a decay constant of 1.51 × 103 y1. If a smoke detector gives off ten disintegrations per second, how many grams of Am-241 are present in the detector?

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