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Could someone help me with this last part of my chemistry practice ! Thank you! (30 points)

Could someone help me with this last part of my chemistry practice ! Thank you! (30 points)
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Could someone help me with this last part of my chemistry practice ! Thank you! (30 points)

Could someone help me with this last part of my chemistry practice ! Thank you! (30 points-example-1
User Cmeid
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1 Answer

3 votes
In this order:

100 years -- 250g
200 years -- 125g
300 years -- 62.5g

All I did to get this was for each half life, or every 100 years, divide the amount of radioactive material by 2.

Hope this helps!
User Siddhartha Maji
by
8.8k points
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