Radioactivity

After 548 hours decreases the activity of a radioactive substance to 1/9 of the initial value. What is the half-life of the substance?

Correct answer:

t1/2 =  172.9 hours

Step-by-step explanation:

(21)t1/2548=91  t1/2=548ln(1/9)ln(0.5)=172.9 hours



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Grade of the word problem:

Related math problems and questions: