Posted by Justin on Wednesday, December 5, 2012 at 7:39am.
You have a bushel of apples and other fruits; the percent apples = 25%. How many apples do you have if the total number of items = 108. Obviously you will do 108 x 0.25 = 27 apples. That's no different with atoms.
%F in CuF is 37.42%.
So mass F in 28.5g CuF2 is 28.5 x 0.3742 =
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