Part (a): The masses From the periodic table: molar mass of copper = 63.5 grams This means that: mass of 2..06 moles = 2.06 * 63.5 = 130.81 grams comparing this mass with the 222 grams of silver, we will find that the mass of silver is greater.
Part (b): The atoms: number of moles = mass / molar mass number of moles of silver = 222 / 107.8 = 2.059 moles each mole contains Avogadro's number of atoms. Since number of moles of copper is slightly larger than nuber of moles of silver, this means that the number of atoms in the copper sample would be more.
