OpenStudy (anonymous):

For instance, carbon-14 has a half-life of 5,730 years. Starting with 100 grams of carbon-14 in a substance, how long would it take until only 50 grams of the parent isotope remained?

2 years ago
OpenStudy (anonymous):

No answer choices.

2 years ago
OpenStudy (anonymous):

wow geez

2 years ago
OpenStudy (anonymous):

https://www.khanacademy.org/science/chemistry/radioactive-decay/v/half-life hope this helps

2 years ago
OpenStudy (anonymous):

I think 50 grams is half of 100 grams of the parent isotope. Therefore, the carbon-14 has completed one half-life of 5,730 years.

2 years ago
OpenStudy (anonymous):

okay then use your own answer btw you just answered your own question :D

2 years ago
OpenStudy (anonymous):

I didn't know if its right, I need to score a 100.

2 years ago