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A sample contains 200 grams of a radioactive isotope who's half-life is 700 years. How much is left after 2,100 years?

A sample contains 200 grams of a radioactive isotope who's half-life is 700 years. How much is left after 2,100 years?
asked 26.0k views
9 votes
A sample contains 200 grams of a radioactive isotope who's half-life is 700 years. How much is left after 2,100 years?

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User Johny Skovdal
by
8.2k points

1 Answer

10 votes
Answer: 25g

Explication:

Sample= 200g
t 1/2= 700 years
t= 2100 years


200g—> 100g—>50g—>25g
0y—> 700 y–> 1400 y—> 2100y
answered
User Turtaru
by
7.8k points
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