Tuesday, August 9, 2011

10th grade chemistry question!?

the isotopes of magnesium (and their percent abundance) are Mg-24 (79.0%), Mg-25 (10.0%), and Mg-26 (11.0%). Calculate the atomic m of magnesium. NOTE: to one decimal place, the m of each isotope is equal to the m number. Thus, the m of an atom of Mg-24 is 24.0 amu.

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