1.

The half-life period of a radioactive substance is 8 years. After 16 years, the mass of the substance will reduce from starting 16.0 g to

Answer»

8.0 g
6.0 g
4.0 g
2.0 g

Solution :`N = (16)/(8) = 2, N = (N_(0))/(2^(n)) = (16.0)/(2^(2)) = (16.0)/(4) = 4.0 g`


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