1.

A sample contains 16g of a radioactive material, the half-life of which is two days. After 32 days, the amount of radioactive material left in the sample is Less than 1 mg  

A. Less than 1 mg
B. \[\frac{1}{4}g\]
C. \[\frac{1}{2}g\]
D. \[1g\]
Answer» B. \[\frac{1}{4}g\]


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