1.0 g radioactive sodium on decay become...

1.0 g radioactive sodium on decay becomes 0.25 g in 16 hours. How much tie 48 g of same radioactive sodium will need to become 3.0 g

A

48 hours

B

32 hours

C

20 hours

D

16 hours

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The correct Answer is:

B

48 g of radioactive sodium will need 32 hours to become 3.0 g.

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