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2 years ago

8

A 200. 0-ng sample of sodium-24 was stored in a lead-lined cabinet for 45 hours. The half-life of sodium-24 is 15 hours. How muc

h sodium-24 remains?

1 answer:

ipn [44]2 years ago

3 0

Answer:

25 gm would be left

Explanation:

45 hours is 3 half lives

200 gm * 1/2 * 1/2 * 1/2 = 25 gm

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