If half-life of a substance is `3.8` days and its quantity is `10.38 gm`. Then substance quantity remaining left after `19` days will be

Half life of a substance is 77 days then its decay constant will be :

The half-life of a radioactive substance is 10 days. This means that

The half-life of Radon is 3.8 days. Define half-life.

Half-life of a radioactive substance is 2.9 days. Calculate the amount of 10 mg of substance left after 29 days.

Half-life of a radioactive substance is 2.9 days and the amount of substance is 10 mg. How many micrograms of the substance will be left after 29 days.

Half life of a radioactive elemets is 12.5 hour and its quantity is 256 gm. After how much time is quantity will remain 1 gm ?

Half life of a radioactive elemets is 12.5 hour and its quantity is 256 gm. After how much time is quantity will remain 1 gm ?

Radon-222 has a half-life of 3.8 days. If one starts with 0.064 kg of Radon-222 the quantity of Radon-222 left after 19 days will be - (A) 0.002 kg. (B) 0.062 kg. (C) 0.032 kg. (D) 0.024 kg.