Respuesta :
If we dry the hydrate then, what will remain is the amount of salt, all of the water will evaporate. We are then able to determine the masses of the salt and water and consequently be able to determine the number of moles by dividing the masses by the molar mass. Then, solve for the mole ratio.
If: the Initial mass of an unknown hydrate can be determined
then: the hydrate can be heated to dehydrate it and the mole ratio can be determined
because: the difference in this is equivalent to the water in the hydrate.