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posted by Kim Wednesday, January 23, 2013 at 9:38pm.
The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 182 milligrams of barium?
1 atom =2.28E-22 g and 182mg=0.182g 0.182g*(1 atom/2.28E-22 g)= number of barium atoms.
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