Question

Initially 100 milligrams of a radioactive substance was present. After 5 hours the mass had decreased...

Initially 100 milligrams of a radioactive substance was present. After 5 hours the mass had decreased by 7%. If the rate of decay is proportional to the amount of substance present at time t, determine the half-life of the radioactive substance

Homework Answers

Answer #1

Hence, half time of the substance is 47.7 hrs.

It means that the mass of the substance becomes half at that time.

Here, at t=47.7 hrs, the mass of the substance is 50 m grams.

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