1. Find the molar mass of Na₂SO₄:
* Na: 22.99 g/mol (x2 because there are two sodium atoms) = 45.98 g/mol
* S: 32.06 g/mol
* O: 16.00 g/mol (x4 because there are four oxygen atoms) = 64.00 g/mol
* Total molar mass of Na₂SO₄ = 45.98 + 32.06 + 64.00 = 142.04 g/mol
2. Calculate the mass percentage of sodium in Na₂SO₄:
* (Mass of sodium / Molar mass of Na₂SO₄) x 100%
* (45.98 g/mol / 142.04 g/mol) x 100% = 32.37%
3. Determine the mass of sodium in 10 g of Na₂SO₄:
* Mass of sodium = (Mass percentage of sodium / 100%) x Mass of Na₂SO₄
* Mass of sodium = (32.37% / 100%) x 10 g = 3.24 g
Therefore, there are approximately 3.24 grams of sodium in 10 grams of sodium sulfate.
