Radioactivity : mass of sample

  • Thread starter Millano
  • Start date
  • #1
8
0

Homework Statement



How many radioactive atoms are present in a sample of 6GBq of 99mTc and what is the approximate mass of the sample?

Homework Equations



A= λN
half life = ln2/λ
mass = (no.nuclei * mass number)/avorgado number
avogado = 6.023×10^23
half life = 6 hours

The Attempt at a Solution



worked out λ using the above half life (6 hours) and then N (no. nuclei). My problem is that we was not given the half life to beign with. Is there any other way of working it out without the half life ?
 

Answers and Replies

Related Threads on Radioactivity : mass of sample

Replies
2
Views
2K
  • Last Post
Replies
6
Views
694
  • Last Post
Replies
3
Views
3K
Replies
4
Views
683
Replies
3
Views
2K
Replies
2
Views
9K
  • Last Post
Replies
3
Views
698
  • Last Post
Replies
2
Views
3K
Replies
1
Views
2K
Top