the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is

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A freshly prepared sample of a radioisotopes of half-life 1386s has activity 10^3 disintegrations per second. Given that ln 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is
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Sep
A freshly prepared sample of a radioisotopes of half-life 1386s has activity 10^3 disintegrations per second. Given that ln 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is A freshly prepared sample of a radioisotopes of [...]
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Tags: A freshly prepared sample of a radioisotopes of half-life 1386s has activity 10^3 disintegrations per second. Given that ln 2 = 0.693 , the fraction of the initial number of nuclei (expressed in nearest percentage) that will decay in the first 80s after preparation of the sample is ,