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The half life of a radioactive isotope is known to be

The half-life of a radioactive isotope is known to be exactly 1 h.

(a) What fraction of a sample would be left after exactly 3 h: (1) one-third, (2) one-eighth, or (3) one-ninth?

(b) What fraction of a sample would be left after exactly 1 day?

(a) What fraction of a sample would be left after exactly 3 h: (1) one-third, (2) one-eighth, or (3) one-ninth?

(b) What fraction of a sample would be left after exactly 1 day?

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