Ask a New Question

Question

You have 180 g of a radioactive substance. It has a half-life of 265 years. After 1,325 years, what mass remains?
5 years ago

Answers

oobleck
180 * (1/2)^(1325/265) = 5.625 g

Note that 1325 = 5*265, so that's 5 half-lives
so, 1/2^5 = 1/32 will remain
180/32 = 45/8
5 years ago

Related Questions

What does radioactive mean??? 32% of a particular radioactive substance disappears in 227 years. Part 1: Find the decay constan... If a radioactive isotope has a half-life of 20 hours, how many half-lives have occured after 80 hour... What happens to radioactive hydrogen during cellular respiration? It gets recycled into hydrogen gas... A lab has 40 mg of radioactive iodine. After 24 days there are only 5 mg remaining. What is the hal... If the amount of a radioactive element decreases from 3.2 g to 0.40 g in 18. days, what is its half-... When radioactive substances​ decay, the amount remaining will form a geometric sequence when measure...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use