A 0.5881 g sample of impure magnesium hydroxide is dissolved

Last updated: 7/31/2022

A 0.5881 g sample of impure magnesium hydroxide is dissolved in 105.0 mL of 0.2047 M HCl solution. The excess acid then needs 19.85 mL of 0.1050 M NaOH for neutralization. Calculate the percent by mass of magnesium hydroxide in the sample, assuming that it is the only substance reacting with the HCl solution.