[" The half life of Pa- "218" is "3" minutes.What mass of a "16g" sample of "Pa-218" will remain after "],[15" minutes."]

The half life of .^(218)Pa is 3 minutes. What mass of a 16 g sample of .^(218)Pa will remain after 15 minutes ?

The half life of Pa^218 is 3 minutes. What fraction of 10g sample of Pa^218 will remain after 15 minutes ?

Half life of .^18F is 110 minutes.What fraction of .^18F sample decays in 20 minutes?

The half life period of radio active isotope is 5 minutes. The fraction of isotope, that will be remaining after 30 minutes is

The half life period of a radioactive material is 15 minutes. What percent will remain after 45 minutes ?

The half life period of a radio active material is 15 minutes. What percentage of radioactivity of that material will remain after 45 minutes ?