Final answer:
To calculate the mass of an electron, we divide the mass difference between sodium atoms and sodium ions by Avogadro's number.
Step-by-step explanation:
The mass difference between 100 moles of sodium atoms and sodium ions is 5.48002 g. To compute the mass of an electron, we need to calculate the difference in mass between one sodium atom and one sodium ion. Since sodium loses one electron to become a sodium ion, the difference in mass represents the mass of one electron.
Assuming the mass difference applies to 100 moles, we divide the mass difference by 100 moles to get the mass difference per mole of Na. Then we divide the mass difference per mole of Na by Avogadro's number (6.022 × 10^23) to get the mass difference per sodium atom.
Therefore, the mass of an electron can be calculated as the mass difference per sodium atom divided by 6.022 × 10^23. Using the given values, the calculation would be:
Mass of an electron = (5.48002 g ÷ 100 moles) ÷ 6.022 × 10^23 = 9.110 x 10^-23 g.