Please see the work below.
Work Step by Step
First of all, we will calculate the molar mass of NaOH: 23+16+1=40 g/mol. The following are the steps that we need to follow. 1.We will weigh 40g NaOH. 2. We will place NaOH in a 1 liter volumetric flask. 3. We will add a small volume of distilled and deionized water to dissolve the salt. 4. We will fill the flask to the 1 Liter line.