Answer:mass of any substance to moles.
Explanation:
The conversion of mass to moles depends on the formula of the compound because the mass of the substance is obtained from the formula of the compound. For example. The formula of sodium chloride NaCl, there is one atom of sodium (Relative atomic mass 23) and one atom of chlorine (relative atomic mass 35.5) hence, 1 mole of NaCl has a mass of 58.5g. This becomes the mass to mole conversion factor for NaCl obtained from its formula.