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Americium-241 is used in some smoke detectors It is an alpha emitter with a half-life of 432 How long will it take in years for 31.0 of an Am-241 sample to decay?
Wiki User
∙ 9y ago
288
Wiki User
∙ 9y ago
To calculate the time it takes for 31.0 g of Am-241 to decay, you can use the radioactive decay formula. First, find the decay constant (λ) by ln(2) / half-life. Once you have the decay constant, you can use the formula N(t) = N0 * e^(-λt), where N(t) is the remaining amount of the isotope, N0 is the initial amount, and t is the time. Solve for t to find how long it will take for 31.0 g of Am-241 to decay.
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