What is the half-life of a radioactive substance if 75% of a given amount of the substance disintegrates in 30 minutes

What is the half-life of a radioactive substance if 75% of a given amo

1.	What is the half-life of a radioactive substance if 75% of a given amount of the substance disintegrates in 30 minutes
A.	7.5 minutes
B.	25 minutes
C.	20 minutes
D.	15 minutes
Answer» E.

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What is the half-life of a radioactive substance if 75% of a given amount of the substance disintegrates in 30 minutes

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