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OpenStudy (anonymous):
A sample of radioactive material initially contains 1.2 x 1020 atoms of the isotope. The decay constant for the isotope is 3.6 x 10-3s-1. Calculate the number of atoms of the isotope remaining after 1000s. Ive been trying to do this for a week!!! If somebody can please help pleaseeeeeee i would appreciate it so much. Thank you
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