# Question #abb57

To prepare 1 L of a 0.100 M NaOH solution, you would dissolve 4 g of NaOH in 1 L of water. Since 250 mL is $\frac{1}{4}$ of 1 L, you would need $\frac{1}{4}$ the amount of NaOH to make 250 mL of a 0.100 M solution, which is 1 g NaOH.