1 mg of a radioactive substance starts decaying . How much substance will be left after 24 hours ? Half life is 8 hours.

The half life period of a radioactive substance is 10 hours. How much will be left after 4 hours in 1g atom sample ?

The half-life of a radioactive element is 10 hours. How much will be left after 4 hours in 1g atom sample?

If 8g of a radioactive substance decays into 0.5 g in 1 h, then the half-life of the substance is

The half-life of a radioactive substance is 1,672 years. If the initial mass of the substance is 1 g, after how many years will only 1 mg of it to be left behind?