PLEASE ANSWER
12.4 g of sodium sulfate, Na2SO4, is dissolved to prepare 300.0 mL of solution. What is the amount concentration of sodium ions in the solution? The molar mass of sodium sulfate is 142.0428 g/mol. *
2.33 mol/L
0.582 mol/L
0.0873 mol/L
0.291 mol/L
