So first, before we find the grams of sodium hydroxide, we have to find the moles of sodium hydroxide. To find the moles, we have to take our one molar solution of sodium hydroxide. We multiply that by our volume in liters. So, multiplied by zero point 250 liters, and we get zero point 25 moles of sodium hydroxide. Because the liters cancel, the second step is to find the grams of sodium hydroxide. To find the grams, we must first find the molecular weight of sodium hydroxide.