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Mathematics, 01.08.2019 01:00 karmaxnagisa20
How long will it take for 750 mg of a sample of radium-225, which has a half-life of about 15 days, to decay to 68 mg? a. ≈ 50 days b. ≈ 54 days c. ≈ 48 days d. ≈ 52 days
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How long will it take for 750 mg of a sample of radium-225, which has a half-life of about 15 days,...
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