Here's how to calculate the volume of a 3.0 M NaCl solution made with 526 g of solute:

1. Calculate the moles of NaCl:

* Molar mass of NaCl: 58.44 g/mol (approximately)

* Moles of NaCl: (526 g) / (58.44 g/mol) = 9.00 mol (approximately)

2. Calculate the volume of the solution:

* Molarity (M): 3.0 mol/L

* Volume (L): (9.00 mol) / (3.0 mol/L) = 3.0 L

Therefore, the volume of the 3.0 M NaCl solution made with 526 g of solute is approximately 3.0 liters.