Question

The half life of a radioactive element is 10 hours how much will be left after 4 hours in 1 gram atom

Answer 1

Answer:

4/10=> 2/5 or => 0.4 half lives.

after 0.4 half lives,

the amount would be left=> (1/2)^0.4

((1/2)^0.4)*1 gm

=> 1/2^0.% gms