Question

A 5.49g sample of an iron(III) chloride hydrate was found to contain 2.20g water. What is the complete formula of the hydrate?

Answer 1

This is a super old question but I should probably answer it ;_;

subtract the moles of hydrate - moles of water to find grams of iron(III) chloride

then convert grams of water and grams of iron(III) chloride to moles

find the molar ratio between moles water and moles iron chloride, then write the name of the hydrate