How many moles of silver atoms are in the piece of jewelry?
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September 3rd, 2010 at 5:32 pm
Avogadro’s number is the number of atoms per mole so just divide the number of atoms by avogadros number to cancel the unit of atoms and get moles
September 6th, 2010 at 4:35 am
1 mol = 6.02×10^23 atoms
?mol = 5.08×10^22 atoms
you just need to divide 5.08×10^22 by 6.02×10^23 atoms.so the answer is 0.0844
you just need 3 significant digits cuz 5.08 has 3 significant digits.