grimsnightmare
  • grimsnightmare
I have a quick question about atomic weight. The atomic weight for Na is 22.98977 now would I round this to 23 or 22.9 or 22.98. Sorry if it's a little silly.
Chemistry
chestercat
  • chestercat
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amurciano2
  • amurciano2
22.99
grimsnightmare
  • grimsnightmare
Thank you
grimsnightmare
  • grimsnightmare
Sorry. So for 126.9045 I would only make it 126.90?

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amurciano2
  • amurciano2
Yes. It is usually two decimal places and normal rounding rules for the hundredth place
grimsnightmare
  • grimsnightmare
Thank you very much!

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