Zr 32. After 195 days, a 10.0 g sample of pure has decayed to the extent that only 1.25 g of the original 95 Zr remains. The half-life of 95 Zr is closest to (A) 195 days (B) 97.5 days (C) 65.0 days (D) 48.8 days (E) 24.4 days

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