How long will it take for a sample containing 1.50 mole(s) of Ra-225 to reach a point where it contains only 0.375 mole(s) of

Question

How long will it take for a sample containing 1.50 mole(s) of Ra-225 to reach a point where it contains only 0.375 mole(s) of Ra-225? (The half-life of Ra-225 is15 days.

Kunduz · Accepted Answer

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