The half-life of a radioactive substance is 15 hours. If at some instance, the sample has a mass of 512 g, calculate the time it will take 78 of the sample to decay

By: |Published on: Jan 9|Categories: Physics WAEC| 0 comments

A. 15 hours
B. 30 hours
C. 45 hours
D. 60 hours

Correct Answer:

Option C – 45 hours

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