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11-03-2024
Physics

contestada

Actinium-226 has a half-life of 29.0 hours. If 225 mg of actinium-226 disintegrates over a period of 116 hours, how many mg will remain?

a) 56.25 mg
b) 28.12 mg
c) 14.06 mg
d) 7.03 mg

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