A radioactive element has a half life of 25 hours. After what time will 1/8 of initial number of its atom disintegrate? After what time will 1/32 of the initial number remain unchanged?
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A: number of electrons per minute = 7000 isotopic abundace of C-14 = 1.3×10-12
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A: Half life , T12 = 35 days =35 x 24 = 840 hours Initial Activity , A0 = 4.5 x 108 Bq T1 = 36 hours…
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A: Given values: Half life of U235, t12(U235)=7.04×108 yr Half life of U238, t12(U238)=4.47×109 yr…
Q: What is the binding energy per nucleon for ?? 13 27 (Aluminum – 27)? Note: A neutral ?? 13 27…
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Q: The barium isotope 131 Ba has a half-life of 12 days. A 300 µg sample of 131 Ba is prepared.
A: Write the given values of this problem. Half-lifeT12=12 dayst=1 daysample(No)=300 μg
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Q: What fraction f1 of a radioactive sample will be left after 3 half‑lives? f1 = ? What fraction f2…
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