Question: solve it correctly please. I ll rate accordingly. my last attempt and answer must be match A pure sample of Ra-226 contains 2.0 x 10

solve it correctly please. I ll rate accordingly. my last attempt and answer must be match

A pure sample of Ra-226 contains 2.0 x 10 # atoms of the isotope. If the half life of Ra-226 = 1.6 x 10 years, what is the decay constant of this sample? 3.75 x 108 year .1 3.75 x 1010 .2 0 4.02 x 10-4 year-1-3 0 3.75 CI .4 0

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