Use the dilution formula
mL1 x M1 = mL2 x M2
The biggest problem here is that you don't have the M of the NaOH. So change grams NaOH to mols (mols = g/molar mass) and M = mol/L solution then plug into the dilution formula.
Calculate the volume of concentrated NaOH solution (which contains 500.00g of NaOH per liter of solution) that you will need to make 1.00L of a 0.100M NaOH solution
2 answers
L=8