You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if after 37 days 1/32 of the sample is undècayed (radioactive). b) How many grams of the sample remain radioactive if 7/8 of the sample have decayed? c) How many grams of the sample does the 7/8 decay equal? d) How much time has elapsed if 25g of the original sample remain radioactive?
You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if after 37 days 1/32 of the sample is undècayed (radioactive). b) How many grams of the sample remain radioactive if 7/8 of the sample have decayed? c) How many grams of the sample does the 7/8 decay equal? d) How much time has elapsed if 25g of the original sample remain radioactive?
Chapter19: The Nucleus: A Chemist's View
Section: Chapter Questions
Problem 76CWP
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Question
You have a sample 100.0 g sample of lodine-135.
a) Determine the half-life of a radionuclide if after 37 days 1/32 of the sample is
undècayed (radioactive).
b) How many grams of the sample remain radioactive if 7/8 of the sample have
decayed?
c) How many grams of the sample does the 7/8 decay equal?
d) How much time has elapsed if 25g of the original sample remain radioactive?
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