Question

10. A radioactive source has a half-life of 14.0 minutes. Its activity is 5.00 microCuries at...

10. A radioactive source has a half-life of 14.0 minutes. Its activity is 5.00 microCuries at 10:00 AM. (a) What is the decay constant of the source? (b) How many parents are present at 10:00 AM? (c) What is the activity at 10:42 AM? (d) How many parents are present at 10:42AM? (e) How many disintegrations occur between 10:00 AM and 10:42 AM? (f) How many daughters are born during this time interval?   

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

do let me know if u need more help

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The radioactive isotope 234Pa has a half-life of 6.70 h. A sample containing this isotope has...
The radioactive isotope 234Pa has a half-life of 6.70 h. A sample containing this isotope has an initial activity (t = 0) of 35.0µCi. Calculate the number of nuclei that decay in the time interval between t1 = 7.0 h and t2 = 14.0 h. ___________ Nuclei
35. Strotium−90, a radioactive isotope, is a major product of an atomic bomb explosion. It has...
35. Strotium−90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half-life of 28.1 yr. (a) Calculate the first-order rate constant for the nuclear decay. (b) Calculate the fraction of 90Sr that remains after 10 half-lives. (c) Calculate the number of years required for 92.3 percent of 90Sr to disappear. (a) yr−1 (b) × 10 (c) × 10 yr The activity of a radioactive sample is the number nuclear disintegrations per second, which is...
A radioactive isotope has a half-life of 72.0 min. A sample is prepared that has an...
A radioactive isotope has a half-life of 72.0 min. A sample is prepared that has an initial activity of 1.40×1011 Bq. Q1: How many radioactive nuclei are initially present in the sample? Q2: How many are present after 72.0 min? Q3: What is the activity after 72.0 min? Q4: How many are present after 144 min? Q5: What is the activity after 144 min?
A radioactive source consist of 22g Na-22. Calculate the source's activity? The half-life of the isotop...
A radioactive source consist of 22g Na-22. Calculate the source's activity? The half-life of the isotop is 2,6 years. Calculate the time it takes until the mass of the Na-22 in the source is reduced to 1,0g.
A freshly prepared sample of a certain radioactive isotope has an activity of 10.4 mCi. After...
A freshly prepared sample of a certain radioactive isotope has an activity of 10.4 mCi. After 4.20 h, its activity is 8.00 mCi. (a) Find the decay constant and half-life. decay constant s-1 half-life h (b) How many atoms of the isotope were contained in the freshly prepared sample? (c) What is the sample's activity 33.7 h after it is prepared? mCi
The radioactive isotope Gold-198 has a half-life of 64.80 hrs. A sample containing this isotope has...
The radioactive isotope Gold-198 has a half-life of 64.80 hrs. A sample containing this isotope has an initial activity of 40.0 μCi. Calculate the number of nuclei that will decay in the time interval from 10 hrs to 12 hrs.[10 marks]
The radioactive isotope 198Au has a half-life of 64.8 hours. A sample containing this isotope has...
The radioactive isotope 198Au has a half-life of 64.8 hours. A sample containing this isotope has an initial activity at (t=0) of 1.50e-12 Bq. Calculate the number of nuclei that will decay in the time interval between t1=10 hours and t2=20 hours Answer is 4.60e16 but I'm not sure how. Thanks and please show work
The radioactive isotope 198Au has a half-life of 64.8 hr. A sample containing this isotope has...
The radioactive isotope 198Au has a half-life of 64.8 hr. A sample containing this isotope has an initial activity (t = 0) of 1.5x 10^12 Bq. Calculate the number of nuclei that decay in the time interval between t1 = 10 hr and t2 = 12 hr. Please show and explain work, and do not use calculus to solve it.
The radioactive nuclide Plutonium-199 has a half-life of 43.0 min. A sample is prepared that has...
The radioactive nuclide Plutonium-199 has a half-life of 43.0 min. A sample is prepared that has an initial activity of 7.56 ×1011 Bq. i. How many Plutonium-199 nuclei are initially present in the sample? ii. How many are present after 30.8 min? iii. What is the activity at this time?
The radioactive isotope (82 Sr) has a half-life of 25.4 days. A sample containing this isotope...
The radioactive isotope (82 Sr) has a half-life of 25.4 days. A sample containing this isotope has an initial activity at (t = 0) of 4.5 x 10^8 Bq. Calculate the number of nuclei that will decay in the time interval between t1 = 34.0 hours and t2 = 50.0 hours.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT