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Krypton-85, or 85 Kr, has a half-life of 10.72 years. Imagine a sample of krypton-85 is prepared. (a)What fraction of the sample will remain 4.80

Krypton-85, or ⁸⁵Kr, has a half-life of 10.72 years. Imagine a sample of krypton-85 is prepared.

(a)What fraction of the sample will remain 4.80 yr after its preparation?

N/N0=

(b)What fraction of the sample will remain 10.8 yr after its preparation?

N/N0=

(c)What fraction of the sample will remain 107.2 yr after its preparation?

N/N0=

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