A student is asked to make a solution of sodium hydroxide by dissolving an unknown mass of pellets in 250cm3 of water. 25cm3 of solution is then titrated against a standard solution of hydrochloric acid (0.50M) using a suitable indicator to identify the neutralization point. What are the number of moles of sodium hydroxide in 25.0cm3 and the 250cm3 solution. Volume of sodium hydroxide =25.05cm3, moles of HCl=0.00125 moles