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Strontium-90 has a half-life of 28.1 years. How many years will it take for a sample of Strontium-90 to decay to 25% of its initial quantity?

Strontium-90 has a half-life of 28.1 years. How many years will it take for a sample-example-1
User Hildensia
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5 votes

Answer:

B

Explanation:

One half life there will be 50 %

another half life and there will be 25 %

so TWO half lives * 28.1 yrs/ half life = 56.2 yrs

User Love Dager
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