Chemistry, 12.05.2021 23:00, aprilpendergrass
Multiple QUESTIONS PLEASE HELP!!
How many half-lives would it take for half a sample of a radioactive isotope 1 point
to decay?
1 half-life
2 half-lives
3 half-lives
4 half-lives
Gold-198 is radioactive isotope, and it has a half-life of about 2.5 days. You have 100 grams of Golf-198. How many grams remain after 20 days?
3.125 grams
1.5625 grams
0.78125 grams
0.390625 grams
How many half-lives would it take for only 25% of the original radioactive isotope to remain
1 half-life
2 half-lives
3 half-lives
4 half-lives
A Sample of cobalt-69 As an activity of 3000 BQ. What will the activity be after 50 years Cobalt-60 has a half-life of 5 years.
23.4375
1.46484375
5.859375
2.9296875
How many days does it take 16.0g of Gold-198 to decay to 1.0g? (each half-life=2.69 days)
10 days
2.69 days
10.76 days
16 days
Answers: 1
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Multiple QUESTIONS PLEASE HELP!!
How many half-lives would it take for half a sample of a radioacti...
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