What is the difference between the bohr model and the quantum mechanical model of the atom?

Which of these best describes the scientific process

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Iam in desperate need of with this !