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Unformatted text preview: 18.) Half-Life Time required for of an isotope to decay Curve exponential 19.) Half life of iron-59 is 44.5 days. How much of a 2.0 mg sample remains after 133.5 days? 20.) 10.0 g sample of Sr-90 undergoes decay and0.625 g remains. How many half-livesoccurred? 21.) Binding Energy Energy that is stored in the nucleus Some of the mass of the particles that make up the nucleus is converted into the binding energy This energy keeps the repulsive protons packed together...
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