Question

60co27 has a half life of 5.26years. if 1gm was allowed to decay how many kg would be present after one half lifethree half life,and five half life.

Answer 1

If 1 gram was allowed to decay 0.5 gram would be present after one half life.

If 1 gram was allowed to decay 0.125 gram would be present after one half life.

If 1 gram was allowed to decay 0.03125 gram would be present after one half life.

$m_n=\frac m{2^n}$

m_n=mass of the element after nth half life.