The half life of a radio -isotope is four hour. If the initial mass of the isotope was 20g,the mass left after 24 hours undecayed is

The half-life of a radioisotoe is four horu. If the initial mass of the isotope was 200g , the mass left after 24 hour undercayed is:

The half-life of a radioisotope is four hours. If the initial mass of the isotope was 200g. The mass remaining after 24hours undecayed is:

The half life of a radioisotope is 4 hr. If the initial mass of the isotope was 200 g, the mass remaining after 24 hr undecayed is:

The half-life of a radioisotope is four hours. If the initial mass of the isotope was 200 g , the undecayed mass remaining after 24 hours is :

The half life of a radioactive isotope is 4 hours. If the initial mass of the isotope were 25 g, the mass of it remaining undecayed after 12 hours would be:

The half life of a radioisotope is 1.5 hours is (the initial mass of isotope is 32 g)

The half-life of a radio isotope is four hours. If the initial mass of the isotope was 200 g , the un-decayed mass remaining after 24 hours is :