1- Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass
ID: 709515 • Letter: 1
Question
1- Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, how many half-lives have passed? 2- A sample of Thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives? 3- Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds? 4- A substance has a half-life of 5 years, how much of the initial sample remains after 15 years? 1- Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, how many half-lives have passed? 2- A sample of Thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives? 3- Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds? 4- A substance has a half-life of 5 years, how much of the initial sample remains after 15 years? 1- Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, how many half-lives have passed? 2- A sample of Thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives? 3- Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds? 4- A substance has a half-life of 5 years, how much of the initial sample remains after 15 years? 3- Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds? 4- A substance has a half-life of 5 years, how much of the initial sample remains after 15 years? 3- Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds? 4- A substance has a half-life of 5 years, how much of the initial sample remains after 15 years?Explanation / Answer
1- 4 half lives
2-0.0063359375 grams
3-8 half lives
4-M/8
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.