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1. Lead-210 has a half-life of 20.4 years. This isotope decays by beta particle emission.
a.) Write a balanced nuclear equation for the decay of lead-210
b.) What is the activity (in millicuries) of a 0.500 t sample of the isotope (atomic mass = 210.0 amu)?

2. Th-230 decays by alpha emission.
a.) Calculate m in grams when one mole of Th-230 decays.
b.) Calculate E in kilojoules when one gram of ^230Th decays.

3. Be-10
a.) Calculate the mass defect
b.) Calculate the binding energy

 

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