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Physics

Answered

The half-life of radium-226 is 1600 years. How many
grams of a 7 g sample will remain after 3200 years?
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Answer :

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Answer:

1600 years half life

3200/1600 is 2 half lifes

first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount

so 1/4*7gm is 1.75gm

Explanation:

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