The molarity of your solution is
If you assume that the mass of sodium hypochlorite will not change the volume of water you use to make the solution, then the final volume of the solution will be 2000.0 mL.
Use sodium hypochlorite's molar mass to determine how many moles you have in 125 g
SIDE NOTE Do not forget to convert mililiters to liters when calculating molarity!
Rounded to three sig figs, the number of sig figs given for 125 g, the answer will be