Multiple Choice
The half-life of the radium isotope Ra-226 is approximately 1,599 years. What percent of a given amount remains after 800 years? Round your answer to two decimal places.
A) 70.70 %
B) 5.71 %
C) 72.70 %
D) 25.02 %
E) 0.71 %
Correct Answer:

Verified
Correct Answer:
Verified
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