The - particles emitted in the decay of 3H (tritium) interact with matter to create light in
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The β- particles emitted in the decay of 3H (tritium) interact with matter to create light in a glow-in-the-dark exit sign. At the time of manufacture, such a sign contains 15.0 Ci of 3H.
(a) What is the mass of the tritium?
(b) What is its activity 5.00 y after manufacture?
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