Solved: Centuries ago, paint generally contained a
Chapter , Problem 86(choose chapter or problem)
Centuries ago, paint generally contained a different amountof cobalt (27C0) than paint today. A certain old painting issuspected of being a new forgery, and an examiner hasdecided to use neutron activation analysis to test thishypothesis. After placing the painting in a neutron fluxof 5.0 X 1012 neutrons/cm2/s for 5.0 minutes, an activityof 55 decays/s of 27C0 (71 = 5.27 yr) is observed.Assuming 27C0 has a cross section of 19 bn, how much cobalt(in grams) does the paint contain?
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