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Chemistry, 19.10.2019 23:30 redthangracing

The graph below shows the decay of a radioactive isotope. what is the half-life of the isotope?
a. 15 seconds
b. 25 seconds
c. 40 seconds
d. 200 seconds
the graph is in an attachment. : )

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The graph below shows the decay of a radioactive isotope. what is the half-life of the isotope?
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