How long does it take for seven-eigths of a sample

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Reference no: EM13512291

The half-life of Uranium(238 upper index 92 lower index) against alphy decay is 4.5x10^9 yr.

(a) How long does it take for seven-eigths of a sample of this isotope to decay?

(b) For fifteen-sixteenths to decay?

Reference no: EM13512291

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