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
Explanation
Correct Option
aNo explanation available
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