### Explanation

No Explanation Available.

### Share this question with friends

### Similar Questions

### A radioactive source has an activity of 800 Bq. It has a half-life of 4 hours. Calculate its activity after 24 hours.

### Those patients who develop tyroid cancer are treated with a certain radioactive isotope before attending surgery. The isotope is ...

### The activity of a source is 680 Bq. After one full day its activity is has fallen to 85 Bq. Calculate its half-life.

### The radioactive isotope Nickel-63 has a half life of 100 years. How much of a 10 gram sample remains after 300 years?

### Geologist use the time it takes for a radioactive isotope to decay to half its original mass called a___________.

### You find a rock sample with radioactive atoms present. If 25% of the original radioactive atoms were present, how many half-lives has the rock been around for? (Hint, at Half-Life = 0, you start with 100%)

### Which diagram best represents the percentage of this radioactive isotope sample that will remain after 2 half-lives?

### The half-life of a radioactive isotope is not effected by which of the following?

### Radioactive carbon-14 is often useful in determining the absolute age of geologic samples because radioactive isotopes

### The initial activity of a sample is 600 Bq. Calculate the percentage reduction in activity after 3 half-lives

### The activity of a sample is 640 Bq. It's half-life is 3 hours. Calculate the percentage of activity remaining after 6 hours.

### An isotope of silver has a half-life of 10 minutes. What fraction of the original mass would remain after one hour?

### An isotope of cesium (cesium-137) has a half-life of 30 years. If 1.0 mg of cesium-137 disintegrates over a period of 90 years, how many mg of cesium-137 would remain?

### Technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient how much remains after 18 hours?

### Which isotope has a half-life of 5715 years?

### Fermium-253 has a half-life of 0.334 seconds. A radioactive sample is considered to be completely decayed after 10 half-lives. How much time will elapse for this sample to be considered gone?

### Radioactive decay of 40K atoms in an igneous rock has resulted in a ratio of 25 percent 40K atoms to 75 percent. 40Ar and 40Ca atoms. How many years old is this rock?

### A radioactive substance has a half-life of 30 minutes.What fraction of the atoms will not have decayed after 1 hour?

### The table shows the radioactive decay of carbon-14. Part of the table has been left blank. After 22,800 years, approximately what percentage of the original carbon-14 remains?

### Uranium has two isotopes but only one of them is radioactive. Which one?