The half-life of 30P is 2.50 minutes. If a sample of 30P has 1.60 × 1010 nuclei present initially, how many remain after 10.0 minutes?
A) 0.800 × 1010
B) 0.400 × 1010
C) 0.200 × 1010
D) 0.100 × 1010
E) 0.050 × 1010
Correct Answer:
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