Posted by NEED HELP on Monday, September 27, 2010 at 12:03pm.
fraction*mass + fraction*mass = atomic mass Cu.
You know fraction and mass of one isotope. Th fraction of the second isotope is 1.00-fraction of first, and the periodic table gives you the atomic mass Cu. Solve for mass of second.
Is this for webassign? Cause I had that exact same problem lol does all of the USA use webassign?
Just wondering
well, I live in Indiana, West Lafayette and I am not sure all of the USA use webassign, and yes this is webassign
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