The decay constant of radon is 0.181 day s^-1. A sample of radon contains 6.00 × 10⁸ radon atoms. How many atoms are left after 10.0 days? A) 9.82 × 10⁷ B) 7.67 × 10⁷ C) 8.34 × 10⁸ D) 7.29 × 10⁸ E) 8.56 × 10⁸

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Quizplus · Accepted Answer

The number of atoms remaining after a certain time can be calculated using the formula N = N0 * e^(-λt), where N0 is the initial number of atoms, λ is the decay constant, and t is the time. Substituting the given values: N = 6.00 × 10^8 * e^(-0.181 * 10) ≈ 9.82 × 10^7.

The Decay Constant of Radon Is 0