Chemistry, 23.06.2021 14:00 kathleendthomas

How much of the original amount of an isotope is present after a period of two half-lives? A. Four times the original amount
B. One-fourth of the original amount
C. Twice the original amount
D. Half of the original amount

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How much of the original amount of an isotope is present after a period of two half-lives? A. Four...