Chemistry question, need help!! Thank you!?
What is the half‑life of an isotope that decays to
6.25% of its original activity in 72.9 h?
- BryceLv 78 months ago
ln0.0625= 72.9k; k= ln0.0625/ 72.9
0.5= e^(t*ln0.0625/ 72.9)
ln0.5= t*ln0.0625/ 72.9; t= 18.225 hours
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