Uncertainty about relative atomic mass

  • #1
Neutroniclad
14
0
For the uncertainty about relative atomic mass.
Such as for H-1 there is 1.00794(7)u.
what exactly does the "7"means?
Is it 1.007947? or 1.00794(+/-)0.000007? or something else?
ref: http://www.ciaaw.org/pubs/TSAW-2007.pdf
 

Answers and Replies

  • #2
DrClaude
Mentor
7,797
4,334
Is it 1.007947? or 1.00794(+/-)0.000007?
Neither. It is the uncertainty in the last digit, so 1.00794 ± 0.00007. (You had a zero too many.)
 
  • Like
Likes Neutroniclad

Suggested for: Uncertainty about relative atomic mass

  • Last Post
Replies
7
Views
931
  • Last Post
Replies
9
Views
3K
Replies
5
Views
2K
Replies
7
Views
3K
  • Last Post
Replies
21
Views
5K
Replies
2
Views
4K
Replies
1
Views
946
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
24
Views
3K
Replies
2
Views
907
Top