Why do scientist use fractions for dimensional analysis when converting one unit into another unit

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

Select the correct answer. wax is a nonpolar substance. in which type of substance is it most soluble?