Science, asked by Camembert, 11 months ago

A radioactive isotope has a half-life of 15 hours. A sealed tube contains 8 milligrams of this isotope .
a)Calculate what mass of the isotope is in the tube:
i. 15 hours later
ii. 45 hours later.
b) Estimate how long it would take for the mass of the isotope to decrease to less than 5% of the initial mass .

Answers

Answered by poonampardhi499

4

Answer:

the correct answer would be 7 milligram..

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