Find the decay constant and half-life of the isotope

Reference no: EM13488411

A freshly prepared sample of a certain radioactive isotope has an activity of 10.0 mCi. After 4.50 h, the activity is 7.80 mCi.

(a) Find the decay constant and half-life of the isotope?

(b) How many atoms of the isotope were contained in the freshly prepared sample?

atoms

mCi

Reference no: EM13488411

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