Homework Help: chemistry

Posted by henry on Monday, September 7, 2009 at 5:28pm.

The element copper has naturally occuring isotopes with mass numbers of 63 and 65. The relative abundance atomic masses are 69.2% for mass=62.93 amu, and 30.8% for mass=64.93 amu. Calculate the average atomic mass of copper.

chemistry - DrBob222, Monday, September 7, 2009 at 5:47pm
(0.692*62.93) + (0.308*64.93) =
chemistry - bobpursley, Monday, September 7, 2009 at 5:47pm
avgMass= .692*62.93+.308*64.93

check my thinking.

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