3.35 moles of acetone is equal to 3.35 moles * 58.08 g/mol = 194.87 g.

The density of acetone is 0.851 g/mL, so the volume of 194.87 g of acetone is equal to 194.87 g / 0.851 g/mL = 228.45 mL.

Therefore, 228.45 mL of acetone would be needed to obtain 3.35 moles of acetone.