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A. 18.30 gram.sample of cobalt is hepted a the preience of exceis suifur. A metal sulfide is formed aith a mass of 33.25 9. Detarmina tha ampinicai formuts of the inetal sulfide. Finer ther eheniants in iber ofiarl Cu, 5 : empirical formula = It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). A. 39.76 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its waight ramained constant. After heating, 23,17 grams of the anhydrous compound remained. What is the formula of the hydrate? tt is aften possible to change a hydrate into an anhydrous compound by heating it to dive of the water (dehydration). A 43.61 gram sample of a hydrate of LiCl was heated tharoughly in s porcelain crucible, untilits meight ramtained constant. After hesting, 30.60 grams of the anhydrous compound remeined. What is the formula of the hydrate? Uie a perioel lentead of a dot in the formoula of the fivitente