A solid sample contains both NaOH and NaCl.0.500g of this solid sample was dissolved in water to make a 20.0mL solution and then this solution was titrated by 0.500mol/LHCl solution. If 22.1mL of HCl was used to reach the end point, what is the mass % of NaOH in the original solid sample? NaOH+HClNaCl+H2O Note: 1. Keep 3 sig figs for your final answer. 2. Answer as percentage. Sample answer: 90.0,92.7%(92.7% will be converted to 92.7 by Canvas)