Answer:
The molarity of the solution is 0.0709 mol/L
Explanation:
Calculate the number of moles of sodium sulfate using the formula:
Number of moles = Mass / Molar mass.
Number of moles = 7.55 g / (22.99 g/mol + 32.06 g/mol + 4*(16.00 g/mol)) = 7.55 g / 142.04 g/mol = 0.0532 mol.
2Calculate the volume of the solution in liters:
Volume = 750 cm^3 = 750 mL = 0.75 L.
3Calculate the molarity using the formula:
Molarity = Number of moles / Volume of solution.
Molarity = 0.0532 mol / 0.75 L = 0.0709 mol/L.
