1. Find the molar mass of sodium carbonate:
* Na: 22.99 g/mol (x2 because there are two sodium atoms) = 45.98 g/mol
* C: 12.01 g/mol
* O: 16.00 g/mol (x3 because there are three oxygen atoms) = 48.00 g/mol
Total molar mass of Na₂CO₃ = 45.98 + 12.01 + 48.00 = 105.99 g/mol
2. Calculate the number of moles:
* Moles = Mass / Molar Mass
* Moles = 212 g / 105.99 g/mol
* Moles ≈ 2.00 moles
Therefore, there are approximately 2.00 moles of sodium carbonate in 212g.
