Ask a New Question

A sample of the radioisotope

A radioisotope has a half-life of 4 days. How much of a 20-gram sample of this radioisotope remains at the end of each time
1. 3 answers
2. asked by Stephanie
3. 4,047 views
A sample of phosphorus-32 has a half-life of 14.28 days. If 55 g of this radioisotope remain unchanged after approximately 57
1. 2 answers
2. asked by hipniblet
3. 1,056 views
Determine the total time that must elapse until only ¼ of an original sample of the radioisotope Rn-222 remains unchanged.
1. 1 answer
2. asked by Caio
3. 1,214 views
If 200. mg of fluorine-18 is shipped at 7:00 A.M., how many milligrams of the radioisotope are still active when the sample
1. 1 answer
2. asked by Jae
3. 4,063 views
After 1.78 years, 1.990 g of a radioisotope remains from a sample that had an original mass of 2.000 g.Calculate the half-life
1. 1 answer
2. asked by Rachel
3. 454 views
Can someone link me videos and sites that can teach me the formula to solve these? Or try to help me understand how to solve
1. 2 answers
2. asked by Samantha
3. 525 views
A radioisotope P has a half-life of 3 s. At t = 0, a given sample of this isotope contains 8000 atoms. Calculate (i) its decay
1. 2 answers
2. asked by gourav
3. 696 views
A sample of the radioisotope potassium-40 is crushed to increase its surface area. The temperature of the sample is then lowered
1. 1 answer
2. 67 views
Which of the following is true concerning gamma radiation?A. The mass number of the radioisotope decreases by four. B. The
1. 1 answer
2. asked by Cherry
3. 618 views
The activity of a radioisotope is 3000 counts per minute at one time and 2736 counts per minute 48 hours later. What is the
1. 6 answers
2. asked by Michelle
3. 3,820 views