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In 24 days a radioactive isotope decreases in mass from 128g to 2g. What is the ...

In 24 days a radioactive isotope decreases in mass from 128g to 2g. What is the half-life of the radioactive material?

A. 2.54 days
B. 4.00 days
C. 4.80 days
D. 6.00 days
E. 8.00 days




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