Water of crystallization degree of hydration can be critical to the resulting chemical properties. For example, anhydrous RhCl is not soluble in water and is relatively useless in organometallic chemistry whereas RhCl•3HO is versatile. Similarly, hydrated AlCl is a poor Lewis acid and thus inactive as a catalyst for Friedel-Crafts reactions. Samples of AlCl must therefore be protected from atmospheric moisture to preclude the formation of hydrates. Crystals of hydrated copper(II) sulfate consist of [Cu(HO)] centers linked to SO ions. Copper is surrounded by six oxygen atoms, provided by two different sulfate groups and four molecules of water. A fifth water resides elsewhere
Water contamination in Lawrence and Morgan Counties, Alabama has toxic effects on the immune system, the endocrine systems, and may also cause tumors. Major manufacturers tried to limit the use of Perfluorooctanoic acid since it's been revealed that water resources have been contaminated with this compound, including industrial sites, municipal waste sites, and industrial wastes. Children exposed to this chemical are at an increased risk of developing thyroid diseases. When the thyroid gland is affected, it can impact other body parts within the human body which can lead to other health symptoms such as growth development. Although the chemical is not visible, the chemical can enter a body's