Asample of a radioactive element has a mass of 80 g. how much parent and daughter materials are in the sample after two half-lives?

The half-life is the time it takes for the radioactive sample to halve.

The initial sample is 80 g. After one half-life, the initial sample (parent material) will be half of its initial amount, i.e. 40 g. The amount of daughter material will be 80-40=40 g.

After two half-lives, the amount of parent material will halve again: therefore, only 20 g will be left in the parent material, and the amount of daughter material will be 80-20=60 g.

So the answer is: after 2 half-lives, we have 20 g of parent material and 60 g of daughter materia.

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!