A solution formed by mixing 13.0 mL of 0.013 M Ba(OH)2 with 31.0 mL of 7.0 ✕ 10-3 M NaOH. Calculate [OH-]

Answer 1

mols Ba(OH)2 = M x L = ?
mols OH in Ba(OH)2 = 2x that = ?
mols Naoh = m x L = ?

final (OH^-) = total (OH^-)/total L

Answer 2

NaOH?
5. Calculate the pH of 1.0 x 10-10 M HCl