A solution is prepared by dissolving 571.6 g of H 2SO4 in enough water to make 1000.0 mL of solution. The solution has a density of 1.3294 g/mL. (molar mass of H2SO4 = 98.08). What is the molar concentration of the solution?

571.6 g H2SO4/98.08 = mols.

Put that in 1L and it's mol/L = M.
Since the SOLUTION is 1000.0 mL the extra information about the density is extraneous. You don't need it.