Question

The half-life of a radioactive substance is 5 hours. A sample is tested and found to contain 0.48 g

of the substance.

How much of the substance was present in the sample 20 hours before the sample was tested?

A 0.03 g B 0.12 g C 1.92 g D 7.68 g​

Answer 1

Answer:

ans is 7.68 g

Explanation:

digogogifigohpugpyoy

Answer 2

Answer:1.92

Explanation: easy check you will get the answer