Useful numbers: Mass of proton=1.007276u
Mass of neutron=1.008665u
1)Find the binding energy for 49Be. Mass of Be is 9.01218u
2) 214Pb decays via two β+ decays followed by one α decay.
a) What are the final products?
b) The half-life for the 214Pb decay is 27 min. After 10 hrs you find that 3g remain.
How much did you start with?