If I start with an 30 gram sample of Plutonium-244, how many grams would be left of Plutonium-244 after 1 half life

15 g

Explanation:

Given,

Plutonium-244 = 30 g

We have to find the gram of Plutonium-244 left after 1 half-life.

We know that the half-life of a radioactive isotope is constant. The half-life of a Radioactive isotope does not depend on the initial amount of isotope.

Now,

After 1 half-life

Plutonium-244 left =

                               = 15 g

Hence, 15 g of the Plutonium-244 will be left after 1 half-life.