How many atoms are in 1.45 g of Ag?
Silver has a molar mass of
What does this mean? It means that if I have such a mass of silver, there are Avogadro's number,
individual silver atoms.
So all I have to do is divide the mass by the molar mass, and multiply this number (a molar quantity!) by Avogadro's number.
So, moles of silver