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posted by love Wednesday, January 18, 2012 at 10:06pm.
The mass of a single niobium atom is 1.54E-22 grams. How many niobium atoms would there be in 312 milligrams of niobium?
moles Nb = grams/molar mass 1 mole of Nb atoms contains 6.022E23 Nb atoms.
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