Multiple Choice
Uranium-235 has a half-life of 7.04 × 108 years.How many years will it take for 99.9% of a U-235 sample to decay?
A) 7.0 × 105 yr
B) 1.0 × 106 yr
C) 4.7 × 109 yr
D) 4.9 × 109 yr
E) 7.0 × 109 yr
Correct Answer:
Verified
Correct Answer:
Verified
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