1. Convert grams of NaOH to moles:

* Find the molar mass of NaOH: Na (22.99 g/mol) + O (16.00 g/mol) + H (1.01 g/mol) = 40.00 g/mol

* Divide the mass of NaOH by its molar mass: 12.8 g / 40.00 g/mol = 0.32 mol NaOH

2. Calculate the volume of the solution:

* Use the molarity equation: Molarity (M) = moles of solute / liters of solution

* Rearrange to solve for liters: Liters of solution = moles of solute / Molarity

* Plug in the values: Liters of solution = 0.32 mol / 2.18 M = 0.147 L

Answer: You can make 0.147 liters of a 2.18 M NaOH solution from 12.8 g of NaOH.