What is the stomic mass of copper?

two isotopes of copper are naturally occuring with 63Cu at 69.09% (62.93 amu) and 65Cu at 30.91% (64.93 amu).

Answer:
62.93 x .6909 = 43.478337
64.93 x .3091 = 20.069863

43.478337 + 20.069863 = 63.5482
round the answer to 4 significant figures = 63.55

The answers post by the user, for information only, FunQA.com does not guarantee the right.



More Questions and Answers:
  • Chemistry HW...Ideal Gas Law?
  • Does anyone know...?
  • See the details for my question ..?
  • Chemical forlmula: CO2+H2O=?
  • VSEPR, please help?
  • Does marjunnia ( weed ) have any tar in it?
  • Phenol, C6H5OH is a weak organic acid:?
  • How do I calculate the net chage on a Aspartate molecule at a particular ph (ex. 1.0, 3.0, 6.0, 11.0)?
  • For which of the following acids would a 1.00 M solution have the lowest pH ( highest H+ concentration)?