A radioactive material has a half-life of 1.0 hour If 200.0 g of it was
PHYSICS
WAEC 2021
A radioactive material has a half-life of 1.0 hour If 200.0 g of it was present at 6 a.m. on a certain day, how many grams will have decayed by 9 a.m. on the same day?
- A. 175.0 g
- B. 150.0 g
- C. 100.0 g
- D. 187.5 g
Correct Answer: A. 175.0 g
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