The half-life of a radioisotope is the time it takes for half of the substance to decay.

In this case, we start with a 40 g sample and end with a 10 g sample. This means that the substance has gone through two half-lives. The first half-life reduced the sample from 40 g to 20 g, and the second half-life reduced it from 20 g to 10 g.

Given that the total time for these two half-lives to occur is 20 minutes, we can find the time for one half-life by dividing the total time by the number of half-lives.

So, 20 minutes / 2 half-lives = 10 minutes per half-life.

Therefore, the half-life of the radioisotope is 10 minutes, which corresponds to option A.

Question

The half-life of a radioisotope is the time it takes for half of the substance to decay.

In this case, we start with a 40 g sample and end with a 10 g sample. This means that the substance has gone through two half-lives. The first half-life reduced the sample from 40 g to 20 g, and the second half-life reduced it from 20 g to 10 g.

Given that the total time for these two half-lives to occur is 20 minutes, we can find the time for one half-life by dividing the total time by the number of half-lives.

So, 20 minutes / 2 half-lives = 10 minutes per half-life.

Therefore, the half-life of the radioisotope is 10 minutes, which corresponds to option A.

Knowee AI · Accepted Answer

The half-life of a radioisotope is the time it takes for half of the substance to decay.

In this case, we start with a 40 g sample and end with a 10 g sample. This means that the substance has gone through two half-lives. The first half-life reduced the sample from 40 g to 20 g, and the second half-life reduced it from 20 g to 10 g.

Given that the total time for these two half-lives to occur is 20 minutes, we can find the time for one half-life by dividing the total time by the number of half-lives.

So, 20 minutes / 2 half-lives = 10 minutes per half-life.

Therefore, the half-life of the radioisotope is 10 minutes, which corresponds to option A.

What is the half-life of a radioisotope if a 40 g sample becomes 10 g after 20 minutes?A.10 minutesB.50 minutesC.20 minutesD.5 minutesSUBMITarrow_backPREVIOUS

Question

Solution

Similar Questions

Upgrade your grade with Knowee