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The decay chain chain 139Cs139Ba139 la is observed from an initially pre sample of 1Ci of 139Cs. The half-lives are: 9,5 min for 139Cs. And

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The decay chain chain 139Cs139Ba139 la is observed from an initially pre sample of 1Ci of 139Cs. The half-lives are: 9,5 min for 139Cs. And 82,9min for 139Ba, and 139La is stable. What is the maximum 139 Ba activity

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