Question

Isotope H has a half life of 12 years if you start with 60g how much will remain after 24 years

Answer 1

After 24 years, 15g of isotope H will remain.

Step-by-step explanation:

Radioactive decay can be modeled using the half-life of an isotope. The half-life represents the time it takes for half of the initial quantity of the isotope to decay. In this case, the isotope H has a half-life of 12 years. So, after 12 years, half of the initial 60g will remain, which is 30g. After another 12 years (for a total of 24 years), another half of the remaining 30g will decay, leaving 15g of isotope H remaining.