1. Find the molar mass of sodium (Na):
* The molar mass of sodium is approximately 22.99 g/mol.
2. Find the molar mass of sodium carbonate (Na₂CO₃):
* You've already provided the molar mass of Na₂CO₃ as 106 g/mol.
3. Calculate the mass of sodium in one mole of Na₂CO₃:
* There are two sodium atoms in one molecule of Na₂CO₃, so the mass of sodium is:
* 2 * (22.99 g/mol) = 45.98 g/mol
4. Calculate the mass percent of sodium:
* (Mass of sodium / Molar mass of Na₂CO₃) * 100%
* (45.98 g/mol / 106 g/mol) * 100% = 43.36%
Therefore, the mass percent of sodium in Na₂CO₃ is approximately 43.36%.
