To calculate the mass of 8 moles of sodium (Na) atoms, we can use the molar mass of sodium. The molar mass of an element represents the mass of one mole of that element in grams.

The molar mass of sodium (Na) is approximately 22.99 grams per mole (g/mol). This means that one mole of sodium atoms weighs 22.99 grams.

Therefore, to determine the mass of 8 moles of sodium atoms, we can multiply the molar mass by the number of moles:

Mass of 8 moles Na = (8 moles) × (22.99 g/mol) = 183.92 grams

Hence, the mass of 8 moles of sodium atoms is approximately 183.92 grams.