Why is it important to use clear wording and clearly stated outcomes in a hypothesis?

The reaction q+r2=r2q is found to be first order in r2 and

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?