3 years ago

I need help answering this ASAP please!

Mathematics

1 answer:

mariarad [96]3 years ago

8 0

Answer:

≈ 16 g

Step-by-step explanation:

Half life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half of its initial mass.

Therefore;

New mass = Original mass × (1/2)^n, where n is the number of half lives

Thus;

New mass = 125 × (1/2)³

= 125/8

= 15.625

≈ 16 g

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