The half-life of ({ }^{22} mathrm{Na}), sodium-22, is (2.6 mathrm{yr}). If (15.5 mathrm{~g}) of an original 100
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The half-life of \({ }^{22} \mathrm{Na}\), sodium-22, is \(2.6 \mathrm{yr}\). If \(15.5 \mathrm{~g}\) of an original 100 -g specimen remains, how much time has elapsed (to the nearest year)?
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05er t where t26 we find rln ...View the full answer
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