To calculate the mass of sodium in grams for 4.00 moles, we need to use the molar mass of sodium. The molar mass of sodium (Na) is approximately 22.99 g/mol.
Using the formula:
Mass (g) = Number of moles × Molar mass (g/mol)
For 4.00 moles, the calculation would be:
Mass = 4.00 moles × 22.99 g/mol = 91.96 g
Therefore, 4.00 moles of sodium have a mass of approximately 91.96 grams.