Homework Help: Chemisty

Posted by love on 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?

Chemisty - DrBob222, Wednesday, January 18, 2012 at 10:18pm
moles Nb = grams/molar mass
1 mole of Nb atoms contains 6.022E23 Nb atoms.

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