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The activity of a radioisotope

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. 3,841 views
A newly prepared radioisotope has activity 3.7x10^11 Bq. After 4 hours, its activity is reduced to 2.96x10^11.calculatea) decay
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2. asked by Aboi
3. 435 views
A newly prepared radioisotope has activity 3.7x10^11 Bq. After 4 hours, its activity is reduced to 2.96x10^11.calculatea) decay
1. 0 answers
2. asked by Aboi
3. 430 views
A newly prepared radioisotope has activity 3.7x10^11 Bq. After 4 hours, its activity is reduced to 2.96x10^11.calculatea) decay
1. 0 answers
2. asked by Aboi
3. 445 views
An industrial worker accidentally inhaled a radioisotope with an activity of 0.200 kBq. The substance swallowed has a very long
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2. asked by Anonymous
3. 472 views
An industrial worker accidentally inhaled a radioisotope with an activity of 0.200 kBq. The substance swallowed has a very long
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2. asked by Kirsten
3. 499 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. 536 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. 629 views
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. 4,065 views
A certain amount of radioisotope (986.8 x 10-9 kg) is used to make the dial of a watch glow in the dark. If the half-life of
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2. asked by eric
3. 509 views