Question

What volume of a 0.726 M sodium hydroxide solution is required to neutralize 24.6 mL of a 0.298 M hydrobromic acid solution ?

Answer 1

HBr + NaOH ==> NaBr + H2O

mols HBr = M x L = ?
Convert mols HBr to mols NaOH using the coefficients in the balanced equation.
M NaOH = mols NaOH?L NaOH. You have M NaOH and mols NaOH, substitute and solve for L NaOH (and convert to mL if that is needed).