Q27Long answer
The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.
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A sodium atom and ion, differ by one electron. For 100 moles each of sodium atoms and ions there would be a difference of 100 moles of electrons. Mass of 100 moles of electrons= 5.48002 g SLRVNNP Mass of 1 mole of electron = g SLRVNNP Mass of one electron = = 9.1 ×10 -28 g 100 × 6.022 ×1023 = 9.1×10-31 kg